A157217 Mix A091411 and its differences.

1, 2, 3, 6, 9, 10, 19, 28, 47, 51, 98, 122, 220, 221, 441, 444, 885, 886, 1771, 1780, 3551, 3555, 7106, 7173, 14279, 14280, 28559, 28562, 57121, 57122, 114243, 114252, 228495, 228499, 456994, 457018, 914012, 914013, 1828025, 1828028, 3656053, 3656054, 7312107, 7312116

Offset

0,2

Comments

First differences: 1, 1, 3, 3, 1, 9, 9, 19, 4, 47, ....

Links

Table of n, a(n) for n=0..43.

Formula

a(2n) = A091441(n+1). a(2n-1) = A091441(n+1)-A091441(n).

Crossrefs

Sequence in context: A191178 A191127 A015898 * A058958 A215618 A189708

Adjacent sequences: A157214 A157215 A157216 * A157218 A157219 A157220

Keyword

nonn,less

Author

Paul Curtz, Feb 25 2009

Status

approved