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A375841
a(n) = Product_{k=0..n} (k^4 + n).
6
0, 2, 108, 19152, 8840000, 8908817400, 17303456226672, 59111538137501696, 331331804053754904576, 2885800103371503562500000, 37384163240259410286768056000, 694933775143924511454539020849152, 17989643936954432911290280974476623872, 632268529759009258574304284235050340614528
OFFSET
0,2
FORMULA
a(n) ~ n^(4*n + 5/2) / exp(4*n - Pi*sqrt(2)*n^(1/4)).
MATHEMATICA
Table[Product[k^4 + n, {k, 0, n}], {n, 0, 15}]
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Aug 31 2024
STATUS
approved