login
A367271
a(n) = binomial(2*n, n) * n^n.
1
1, 2, 24, 540, 17920, 787500, 43110144, 2826399576, 215922769920, 18836384175180, 1847560000000000, 201267982422458952, 24110526523754151936, 3150082833623386551800, 445775933018180704665600, 67925014299030761718750000, 11087976122055526032070410240
OFFSET
0,2
LINKS
FORMULA
a(n) = A059297(2*n, n).
a(n) ~ 2^(2*n)*n^n/sqrt(n*Pi). - Stefano Spezia, Nov 29 2023
MAPLE
seq(binomial(2*n, n) * n^n, n = 0..16);
MATHEMATICA
A367271[n_]:=If[n==0, 1, Binomial[2n, n]n^n];
Array[A367271, 20, 0] (* Paolo Xausa, Nov 29 2023 *)
CROSSREFS
Sequence in context: A187658 A138450 A262009 * A054946 A377489 A377411
KEYWORD
nonn
AUTHOR
Peter Luschny, Nov 11 2023
STATUS
approved