A015072 q-Catalan numbers (binomial version) for q=-8.

1, 1, 65, 265793, 69690957377, 1169189032203853377, 1255411354557002675473292865, 86271175378590615960023796743819697729, 379424661671199524960693236715772257964919647837761

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: A337808 A218689 A171706 * A015039 A238612 A185823

Adjacent sequences: A015069 A015070 A015071 * A015073 A015074 A015075

Keyword

nonn,easy

Author

Olivier Gérard

Status

approved