OFFSET
0,3
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 0..52
FORMULA
a(n) ~ c * (9/4)^(n^2) * n^(31/36) / 3^(n/2), where c = 2^(5/12) * exp(1/36) * Pi^(1/3) / (A^(1/3) * 3^(7/36) * Gamma(1/3)^(2/3)) = 0.774669663248120327054918681212809967565811826042305406436705141... and A is the Glaisher-Kinkelin constant A074962. - Vaclav Kotesovec, Feb 24 2019
MAPLE
MATHEMATICA
A225439[n_] := Sum[Binomial[k, n-k]*3^k*(-1)^(n-k)*Binomial[n+k-1, n-1], {k, 0, n}]; a[n_] := Det[Table[A225439[i+j-2], {i, n}, {j, n}]]; a[0] = 1; Table[ a[n], {n, 0, 11}] (* Jean-François Alcover, Nov 07 2016 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Karol A. Penson, Jul 02 2013
STATUS
approved