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A342198
a(0) = 1; a(n) = Sum_{k=1..n} binomial(n,k)^4 * a(k-1).
3
1, 1, 17, 179, 6083, 298583, 20015947, 2214261035, 332014246747, 64923646898023, 17220997162396851, 5898373172881341811, 2513698997312409032785, 1335813901379210302030497, 875400777321767437156156305, 692119702624591542667897216641, 653524900495231808524498551469617
OFFSET
0,3
MATHEMATICA
a[0] = 1; a[n_] := a[n] = Sum[Binomial[n, k]^4 a[k - 1], {k, 1, n}]; Table[a[n], {n, 0, 16}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Mar 04 2021
STATUS
approved