A049167 Recip transform of 2*(1 + x^2 + x^5 + x^6)-1/(1-x).

1, 1, 1, 1, 3, 13, 41, 97, 203, 507, 1671, 5695, 17345, 48107, 133867, 404635, 1301205, 4156061, 12789845, 38604189, 118183255, 371846705, 1185390789, 3757924141, 11797229967, 36991159495, 116904780811, 372629921851

Offset

0,5

Comments

Sign diagram of generating sequence: +-+--++--------...

Links

Table of n, a(n) for n=0..27.

Crossrefs

Sequence in context: A095109 A259764 A309139 * A241527 A234387 A173867

Adjacent sequences: A049164 A049165 A049166 * A049168 A049169 A049170

Keyword

nonn

Author

Olivier Gérard

Status

approved