A372252 a(n) = A000045(n+1)*A000292(n) (product of a Fibonacci number and a tetrahedral number).

0, 1, 8, 30, 100, 280, 728, 1764, 4080, 9075, 19580, 41184, 84812, 171535, 341600, 671160, 1303152, 2503896, 4766340, 8997450, 16856840, 31366181, 58001768, 106646400, 195065000, 355074525, 643465368, 1161281394

Offset: 0

Author

Vladimir Kruchinin, Apr 24 2024

Keywords

• nonn

Crossrefs

Cf. A000045, A000292.

Formula

G.f.: -x*((x^2+1)*(x^2-4*x-1))/(x^2+x-1)^4.