A292162 Main diagonal of A292160.

0, -1, -2, 24, 60, 245, 642, 1365, 2552, 5094, -92010, -147752, -476940, -1083134, -2645230, -5251515, -10399760, -18340246, -33854778, -56744526, -95736020, 1650319440, 2252563082, 6443314668, 13202694120, 29698078100, 55023636486, 113357565936

Offset: 0

Author

Seiichi Manyama, Sep 10 2017

Keywords

• sign

Crossrefs

Cf. A292161.

Formula

A292161(n) + i*a(n) = [x^n] Product_{k>=0} (1 - n*i*x^k), where i is sqrt(-1).