A015077 q-Catalan numbers (binomial version) for q=-9.

1, 1, 82, 537355, 285611227174, 12294441765937436842, 42868139471008987306371257332, 12107226510541735123474554479514562160539

Offset

0,3

Links

Table of n, a(n) for n=0..7.

Formula

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

Crossrefs

Sequence in context: A206648 A120269 A291586 * A015040 A235982 A116296

Adjacent sequences: A015074 A015075 A015076 * A015078 A015079 A015080

Keyword

nonn,easy

Author

Olivier Gérard

Status

approved