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A015058
q-Catalan numbers (binomial version) for q=-4.
1
1, 1, 17, 4305, 17685969, 1158222948817, 1214707441621563857, 20378476519005090654009809, 5470368244500158631765129973873105, 23494985488623606981701685225398976313178577
OFFSET
0,3
FORMULA
{1 / (n+1)_q} {2 n choose n}_q.
CROSSREFS
Sequence in context: A239165 A329168 A194015 * A015034 A350980 A161583
KEYWORD
nonn,easy
STATUS
approved