A266519 E.g.f.: Log( Sum_{n>=0} n^(2*n) * x^n/n! ).

1, 15, 683, 62038, 9342629, 2100483216, 658746323647, 274730459045232, 147034646085347145, 98233150285382861440, 80135799180812308488851, 78391682820973752124219392, 90580896598669336052642926957, 122061249780317702369474934804480, 189729092979696204185243101261174695, 336959230406443195042628708778757175296, 678101445794980815528276151098815880395921

Offset

1,2

Links

Table of n, a(n) for n=1..17.

Prog

(PARI) {a(n) = n! * polcoeff( log( sum(m=0, n, m^(2*m) * x^m/m!) +x*O(x^n)), n)}
for(n=1, 20, print1(a(n), ", "))

Crossrefs

Cf. A266520.

Sequence in context: A171113 A166186 A351182 * A177230 A209499 A001520

Adjacent sequences: A266516 A266517 A266518 * A266520 A266521 A266522

Keyword

nonn

Author

Paul D. Hanna, Dec 31 2015

Status

approved