OFFSET
0,2
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..200
FORMULA
a(n) ~ n^(2*n) / exp(2*n - Pi*(n + 1)/2). - Vaclav Kotesovec, Apr 11 2018
MAPLE
seq(mul(k^2+(n-k+1)^2, k=1..n), n=0..15); # Muniru A Asiru, Apr 11 2018
MATHEMATICA
Table[Product[k^2 + (n - k + 1)^2, {k, 1, n}], {n, 0, 15}] (* Vaclav Kotesovec, Apr 11 2018 *)
PROG
(PARI) {a(n) = prod(k=1, n, k^2+(n-k+1)^2)}
(GAP) List([0..15], n->Product([1..n], k->k^2+(n-k+1)^2)); # Muniru A Asiru, Apr 11 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Apr 11 2018
STATUS
approved