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A323662 a(n) = Product_{k=0..n} (k^13 + (n-k)^13). 4
0, 1, 134217728, 170623376651175378921, 187556828900191806607614608932864, 17233921359224498311699145473539829254150390625, 3651108402083969086976039852657366429953837378356052425179136 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
FORMULA
a(n) ~ exp((2*Pi*sqrt((2699 - 1920*cos(2*Pi/13) + 4184*cos(3*Pi/13) - 4512*sin(Pi/26) + 4752*sin(3*Pi/26) - 2944*sin(5*Pi/26))/13) / 13 - 12)*n) * n^(13*n+13).
MATHEMATICA
Table[Product[k^13+(n-k)^13, {k, 0, n}], {n, 0, 10}]
CROSSREFS
Sequence in context: A017493 A017625 A122968 * A194561 A267059 A345643
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Jan 23 2019
STATUS
approved

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Last modified March 29 08:01 EDT 2024. Contains 371265 sequences. (Running on oeis4.)