0,2

a(n) = sum{0<=k<=A007814(n), 2^(n/2^k) }.

G.f.: sum{k>=0, 1/(1-2*x^2^k) }.

Cf. A045654.

Sequence in context: A103023 A111247 A045656 this_sequence A045654 A081672 A137072

Adjacent sequences: A129339 A129340 A129341 this_sequence A129343 A129344 A129345

nonn,easy

Ralf Stephan (ralf(AT)ark.in-berlin.de), May 28 2007