1,1

For every k >= 0, 2^k + 1 is in the sequence.

a(2) = 3, corresponding to A088966(2) = 8 because A007947(8) = A007947(3+1) and A007947(3) = A007947(8+1).

Sequence in context: A049858 A092483 A005257 this_sequence A109740 A000051 A094373

Adjacent sequences: A091694 A091695 A091696 this_sequence A091698 A091699 A091700

more,nonn,less

David Wasserman (wasserma(AT)spawar.navy.mil), Jan 29 2004