User blog comment:Vel!/Tetrational trailing digits/@comment-5929355-20130324081911

  T  b    ( n ) =  ∑    k = 0    <span style="vertical-align:0px;position:absolute;clip:rect(1.557em1000em2.346em-0.515em);top:-3.304em;left:0.369em;"><span class="mi" id="MathJax-Span-17" style="vertical-align:0px;display:inline;position:static;font-size:11px;font-family:MathJax_Main;">∞    <span class="mfrac" id="MathJax-Span-18" style="padding-right:0.12em;padding-left:0.287em;vertical-align:0px;display:inline;position:static;"> <span style="margin-left:-0.246em;vertical-align:0px;position:absolute;clip:rect(1.303em1000em2.338em-0.471em);top:-2.83em;left:50%;"><span class="mn" id="MathJax-Span-19" style="vertical-align:0px;display:inline;position:static;font-family:MathJax_Main;">1  <span style="margin-left:-0.438em;vertical-align:0px;position:absolute;clip:rect(2.904em1000em4.196em-0.514em);top:-3.094em;left:50%;">  <span style="vertical-align:0px;position:absolute;clip:rect(1.275em1000em2.349em-0.514em);top:-2.154em;left:0em;"><span class="mi" id="MathJax-Span-21" style="font-style:italic;vertical-align:0px;display:inline;position:static;font-family:MathJax_Math;">b  <span class="mi" id="MathJax-Span-22" style="font-style:italic;vertical-align:0px;display:inline;position:static;font-size:11px;font-family:MathJax_Math;">k       <span class="mfenced" id="MathJax-Span-23" style="padding-left:0.167em;vertical-align:0px;display:inline;position:static;"> <span style="vertical-align:0px;position:static;font-family:MathJax_Size3;">(    <span style="vertical-align:0px;position:absolute;clip:rect(1.275em1000em2.338em-0.528em);top:-2.154em;left:0.215em;"><span class="mo" id="MathJax-Span-27" style="vertical-align:0px;display:inline;position:static;font-family:MathJax_Main;">lim  <span style="vertical-align:0px;position:absolute;clip:rect(1.608em1000em2.446em-0.531em);top:-1.554em;left:0em;">  <span class="mi" id="MathJax-Span-30" style="font-style:italic;vertical-align:0px;display:inline;position:static;font-size:11px;font-family:MathJax_Math;">a <span class="mo" id="MathJax-Span-31" style="vertical-align:0px;display:inline;position:static;font-size:11px;font-family:MathJax_Main;">→ <span class="mi" id="MathJax-Span-32" style="vertical-align:0px;display:inline;position:static;font-size:11px;font-family:MathJax_Main;">∞      <span class="mo" id="MathJax-Span-33" style="vertical-align:0px;display:inline;position:static;font-family:MathJax_Main;">( <span class="mo" id="MathJax-Span-34" style="vertical-align:0px;display:inline;position:static;font-family:MathJax_Main;">⌊     <span class="mi" id="MathJax-Span-39" style="font-style:italic;vertical-align:0px;display:inline;position:static;font-size:11px;font-family:MathJax_Math;">a    <span class="mi" id="MathJax-Span-40" style="font-style:italic;vertical-align:0px;display:inline;position:static;font-family:MathJax_Math;">n    <span class="mo" id="MathJax-Span-43" style="vertical-align:0px;display:inline;position:static;font-family:MathJax_Main;">/    <span style="vertical-align:0px;position:absolute;clip:rect(1.275em1000em2.349em-0.514em);top:-2.154em;left:0em;"><span class="mi" id="MathJax-Span-45" style="font-style:italic;vertical-align:0px;display:inline;position:static;font-family:MathJax_Math;">b  <span class="mi" id="MathJax-Span-46" style="font-style:italic;vertical-align:0px;display:inline;position:static;font-size:11px;font-family:MathJax_Math;">k    <span class="mo" id="MathJax-Span-47" style="vertical-align:0px;display:inline;position:static;font-family:MathJax_Main;">⌋ <span class="texatom" id="MathJax-Span-48" style="padding-left:0.222em;vertical-align:0px;display:inline;position:static;"> <span class="mo" id="MathJax-Span-50" style="vertical-align:0px;display:inline;position:static;font-family:MathJax_Main;">mod   <span class="texatom" id="MathJax-Span-51" style="padding-left:0.222em;vertical-align:0px;display:inline;position:static;"> <span class="mi" id="MathJax-Span-53" style="font-style:italic;vertical-align:0px;display:inline;position:static;font-family:MathJax_Math;">b   <span class="mo" id="MathJax-Span-54" style="vertical-align:0px;display:inline;position:static;font-family:MathJax_Main;">)  <span style="vertical-align:0px;position:static;font-family:MathJax_Size3;">)