OFFSET
0,3
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..125
FORMULA
a(n) ~ exp((Pi*(sqrt(2) - 1/2) - 4)*n) * n^(4*n + 4).
MATHEMATICA
Table[Product[k^4+(n-k)^4, {k, 0, n}], {n, 0, 15}]
PROG
(Magma) [(&*[(k^4 + (n-k)^4): k in [0..n]]): n in [0..15]]; // Vincenzo Librandi, Jan 18 2019
(PARI) m=4; vector(15, n, n--; prod(k=0, n, k^m + (n-k)^m)) \\ G. C. Greubel, Jan 18 2019
(Sage) m=4; [product(k^m +(n-k)^m for k in (0..n)) for n in (0..15)] # G. C. Greubel, Jan 18 2019
CROSSREFS
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Jan 17 2019
STATUS
approved