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 A328811 a(n) = Sum_{i=0..n} (-1)^(n-i)*binomial(n,i)*Sum_{j=0..i} binomial(i,j)^n. 3
 1, 1, 3, 31, 1255, 161671, 75481581, 121338954577, 734884394666535, 15970479086714049751, 1347242827078365957146473, 415839472158527880691583531617, 507266883682599825619985300960971525, 2284735689605775548174387143718048664963601 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Seiichi Manyama, Table of n, a(n) for n = 0..59 FORMULA a(n) ~ A167010(n). - Vaclav Kotesovec, Oct 28 2019 MATHEMATICA Table[Sum[(-1)^(n-i)*Binomial[n, i]*Sum[Binomial[i, j]^n, {j, 0, i}], {i, 0, n}], {n, 0, 15}] (* Vaclav Kotesovec, Oct 28 2019 *) PROG (PARI) {a(n) = sum(i=0, n, (-1)^(n-i)*binomial(n, i)*sum(j=0, i, binomial(i, j)^n))} CROSSREFS Main diagonal of A328747. Cf. A167010, A328810. Sequence in context: A094579 A029729 A319253 * A136584 A194937 A141153 Adjacent sequences:  A328808 A328809 A328810 * A328812 A328813 A328814 KEYWORD nonn AUTHOR Seiichi Manyama, Oct 28 2019 STATUS approved

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Last modified December 1 16:44 EST 2021. Contains 349430 sequences. (Running on oeis4.)