A306578 a(n) = n! * [x^n] A_n(x) with A_n(x) = exp(x*A_n(((x+1)^n-1)/n)) if n > 0 and A_0(x) = exp(x).

1, 1, 3, 22, 329, 9216, 443227, 33690574, 3815631297, 615764308672, 136379590946891, 40153740607226214, 15306924742075555657, 7392759013812560317840, 4441824191762733091989051, 3268365147290283563408293846, 2905065653907985007147484366113

Offset

0,3

Links

Alois P. Heinz, Table of n, a(n) for n = 0..100

Formula

a(n) = A143632(n,n).

Crossrefs

Main diagonal of A143632.

Sequence in context: A229770 A102223 A189897 * A046947 A002485 A360369

Adjacent sequences: A306575 A306576 A306577 * A306579 A306580 A306581

Keyword

nonn

Author

Alois P. Heinz, Feb 24 2019

Status

approved