A127811 A127790(n)/2.

0, 1, 4, 12, 32, 74, 156, 310, 580, 1035, 1780, 2956, 4764, 7487, 11492, 17274, 25492, 36979, 52812, 74372, 103364, 141927, 192724, 258982, 344652, 454544, 594392, 771084, 992852, 1269377, 1612104, 2034508, 2552248, 3183594, 3949784, 4875248, 5988168

Offset

0,3

Links

Table of n, a(n) for n=0..36.

Formula

G.f.: x / ((x-1)^10*(x+1)^2*(x^2+x+1)^4). - Colin Barker, Jul 27 2013

Crossrefs

Sequence in context: A348864 A133212 A233447 * A361099 A391486 A138517

Adjacent sequences: A127808 A127809 A127810 * A127812 A127813 A127814

Keyword

nonn,easy

Author

N. J. A. Sloane, Apr 07 2007

Status

approved