A015039 q-Catalan numbers (binomial version) for q=8.

1, 1, 65, 266817, 69963653697, 1173835620696269377, 1260401809332973746871411265, 86614199277767115453624156235708310081, 380933302489206359659857650468008737411766944866881

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: A218689 A171706 A015072 * A238612 A185823 A035519

Adjacent sequences: A015036 A015037 A015038 * A015040 A015041 A015042

Keyword

nonn,easy

Author

Olivier Gérard

Status

approved