0,2

N. J. A. Sloane, Table of n, a(n) for n = 0..20000

For n >= 1, a(n) = 2^(1+A023416(n)).

12 = 1100 in binary, which contains two 0's, so a(12) = 2^3 = 8.

Partial sums give A064194.

Cf. A023416.

Sequence in context: A286596 A134066 A090988 * A278531 A095728 A279354

Adjacent sequences: A267581 A267582 A267583 * A267585 A267586 A267587

nonn

N. J. A. Sloane, Jan 17 2016

approved