A049164 Recip transform of 2*(1 + x^2 + x^4 + x^6)-1/(1-x).

1, 1, 1, 1, 1, 1, 1, 1, 3, 23, 135, 599, 2187, 6947, 19899, 52667, 131109, 311525, 717525, 1635781, 3802461, 9332573, 24773869, 70874381, 212534247, 646664443, 1949536667, 5749101579, 16503012263, 46118290863

Offset

0,9

Comments

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

Links

Table of n, a(n) for n=0..29.

Crossrefs

Sequence in context: A154648 A031970 A196881 * A081413 A179328 A255952

Adjacent sequences: A049161 A049162 A049163 * A049165 A049166 A049167

Keyword

nonn

Author

Olivier Gérard

Status

approved