A015062 q-Catalan numbers (binomial version) for q=-7.

1, 1, 50, 119757, 14094337902, 81246911474597002, 22950408766815313800875300, 317662868501471575977731478166067621, 215446318838899436153587239312460946873230930006

Offset: 0

Author

Olivier Gérard

Keywords

• nonn
• easy

Formula

{1 / (n+1)_q} {2 n choose n}_q.