A060057 Nonzero numbers in expansion of ((tan(x))^5)/5! in (x^n)/n!.

1, 70, 5376, 508640, 59835776, 8658773760, 1519012888576, 318434742599680, 78726332782411776, 22686646587991654400, 7541693844185862373376, 2865717052710927775825920, 1234612260068935283167461376, 598705789750919858580870922240

Offset: 0

Author

Wolfdieter Lang, Mar 16 2001

Keywords

• nonn
• easy

Crossrefs

A059419 (fifth column without zeros), A059420, A060056.

Programs

PARI

a059419(n, k) = n!*polcoef(tan(x+x*O(x^n))^k/k!, n);
a(n) = a059419(2*n+5, 5); \\ Seiichi Manyama, May 11 2025

Formula

a(n) = A059419(5+2*n,5).