A015081 q-Catalan numbers (binomial version) for q=-12.

1, 1, 145, 3005137, 8973687926737, 3858507340534467277777, 238908677707677233665446162465745, 2130133713907575249526778398152908510009115601

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: A359013 A265439 A060720 * A015055 A166071 A124969

Adjacent sequences: A015078 A015079 A015080 * A015082 A015083 A015084

Keyword

nonn,easy

Author

Olivier Gérard

Status

approved