A015060 q-Catalan numbers (binomial version) for q=-5.

1, 1, 26, 16151, 252685526, 98680063948026, 963721858629894354276, 235281247773992038934697401151, 1436045713119204599875184429195350135526

Offset

0,3

Links

Table of n, a(n) for n=0..8.

Formula

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

Crossrefs

Sequence in context: A034244 A263222 A265877 * A015035 A336248 A359054

Adjacent sequences: A015057 A015058 A015059 * A015061 A015062 A015063

Keyword

nonn,easy

Author

Olivier Gérard

Status

approved