OFFSET
0,3
FORMULA
Conjecture D-finite with recurrence a(n) -2*n*(2*n-1)*a(n-3)=0. - R. J. Mathar, Jul 16 2024
MATHEMATICA
a[0] = 1; a[1] = 1;
a[n_] := a[n] = (2n)!/(a[n - 1]*a[n - 2]);
Table[a[n], {n, 0, 24}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jul 15 2024
STATUS
approved