A129397 Row sums of A129396.

1, 9, -29, 61, -17, -263, 1019, -2027, 1639, 4625, -22989, 52717, -62369, -43863, 426475, -1159355, 1757143, -366911, -6668509, 22627357, -41707313, 31494233, 83699163, -398658443, 880521031, -1018619535, -628523501, 6333704269, -16958792897, 25462262281, -6426619957, -88626976859

Offset: 0

Author

Jonas Wallgren, Apr 13 2007

Keywords

• sign

Crossrefs

Cf. A129396.

Formula

Empirical g.f.: (x+1)*(8*x^4-6*x^3+x^2+12*x+1) / ((x-1)^2*(4*x^2+3*x+1)^2). - Colin Barker, Oct 07 2015

Extensions

Corrected and extended by R. J. Mathar, Apr 30 2007