User blog comment:LittlePeng9/ITTM galore/@comment-65.26.80.144-20140319173225/@comment-65.26.80.144-20140319173310

oops made mistake can you figure out how to extend this series up to infinity 1+1+2+1+3+1+4+1+5+1+6+1+7+1+8+1+9+1+10+1+11...