1,2

If no zero appears in the base-2 representation, the search "falls through" and addresses the (virtual) leading zero of that prime, see A035100. - R. J. Mathar, Jul 20 2013

Table of n, a(n) for n=1..89.

a(n) = 1+A023512(n). - Antti Karttunen, Jul 13 2013

Cf. A004676, A023512.

Sequence in context: A016559 A104566 A143156 * A101403 A025509 A130079

Adjacent sequences: A227468 A227469 A227470 * A227472 A227473 A227474

nonn

Juri-Stepan Gerasimov, Jul 12 2013

approved