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 A272180 a(n) = Product_{k=0..n} (n^2 + k). 4
 0, 2, 120, 11880, 1860480, 427518000, 135970773120, 57274321104000, 30885807297945600, 20759078324729606400, 17018214378110225280000, 16716468557742686853120000, 19383353274717848149493760000, 26198415087179810897268887040000, 40828604361516687201839617904640000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS FORMULA a(n) ~ exp(1/2) * n^(2*n + 2). MATHEMATICA Table[Product[n^2 + k, {k, 0, n}], {n, 0, 15}] Table[n^2*Pochhammer[1 + n^2, n], {n, 0, 15}] CROSSREFS Cf. A272163, A272179, A272237, A272238. Sequence in context: A206355 A157069 A077540 * A187880 A331500 A024343 Adjacent sequences:  A272177 A272178 A272179 * A272181 A272182 A272183 KEYWORD nonn,easy AUTHOR Vaclav Kotesovec, Apr 21 2016 STATUS approved

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Last modified April 5 09:46 EDT 2020. Contains 333239 sequences. (Running on oeis4.)