A291679 Main diagonal of A291678.

1, 1, 1, -2, -11, -24, -8, 141, 573, 1087, -174, -8700, -31328, -52740, 36387, 534198, 1742445, 2540583, -3626189, -33115232, -97968686, -118497822, 301668764, 2060526393, 5526622320, 5165256226, -23033840842, -127995025736, -310560935969, -193716799472

Offset: 0

Author

Seiichi Manyama, Aug 29 2017

Keywords

• sign

Crossrefs

Cf. A291651, A291678.

Formula

a(n) = [x^n] (1 + x/(1 + x^2/(1 + x^3/(1 + x^4/(1 + x^5/(1 + ...))))))^n, a continued fraction.