OFFSET
0,2
LINKS
Winston de Greef, Table of n, a(n) for n = 0..103
FORMULA
a(n) ~ (2*sinh(2*Pi) - 4*sinh(Pi)*cos(sqrt(3)*Pi)) * n^(6*n + 3) / exp(6*n).
a(n) ~ A258871 * (n!)^6.
MAPLE
A354054 := proc(n)
mul( k^6+1, k=0..n) ;
end proc:
seq(A354054(n), n=0..40) ; # R. J. Mathar, Jul 17 2023
MATHEMATICA
Table[Product[k^6 + 1, {k, 0, n}], {n, 0, 15}]
PROG
(PARI) a(n) = prod(k=1, n, k^6+1);
CROSSREFS
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, May 16 2022
STATUS
approved