1,1

For every k > 0, the sequence includes 4^n + 2^(n+1), with m = 2^n + 1. - David Wasserman (wasserma(AT)spawar.navy.mil), Jan 29 2004

A007947(3) = A007947(3) and A007947(2) = A007947(4), so 3 is in the sequence.

Cf. A087914.

A091697 gives the values of m.

Sequence in context: A148784 A148785 A148786 this_sequence A148787 A125655 A134165

Adjacent sequences: A088963 A088964 A088965 this_sequence A088967 A088968 A088969

nonn

Naohiro Nomoto (pcmusume(AT)alpha-net.ne.jp), Oct 29 2003

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