User blog comment:MachineGunSuper/Question/@comment-32213734-20180225032808/@comment-30754445-20180226204227

@Clarrity

I don't think "{3,3,{3,3,...,{3,3,4}}...} with 128 threes" would fall under the category of "easily expressed" :-)

After all, we can write any number n in BEAF as {n,1}