OFFSET
0,2
FORMULA
a(n) ~ 8^n. - Vaclav Kotesovec, Feb 17 2024
MAPLE
MATHEMATICA
Table[Binomial[3*n, n+1] * HypergeometricPFQ[{1, 1 - 2*n}, {2 + n}, -1], {n, 0, 20}] (* Vaclav Kotesovec, Feb 17 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Peter Luschny, Nov 22 2018
STATUS
approved