A049161 Recip transform of 2*(1 + x^2 + x^6)-1/(1-x).

1, 1, 1, 1, 3, 15, 57, 169, 443, 1211, 3855, 13495, 46749, 154397, 496203, 1611499, 5395893, 18473853, 63472005, 216711453, 737070887, 2515433411, 8649866677, 29935649141, 103896813439, 360791085751, 1253684914707, 4364603935363

Offset

0,5

Comments

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

Links

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

Crossrefs

Sequence in context: A033853 A284014 A049187 * A358685 A118048 A210448

Adjacent sequences: A049158 A049159 A049160 * A049162 A049163 A049164

Keyword

nonn

Author

Olivier Gérard

Status

approved