A306578 - cp's OEIS frontend

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).

n	a(n)
0	1
1	1
2	3
3	22
4	329
5	9216
6	443227
7	33690574
8	3815631297
9	615764308672
10	136379590946891
11	40153740607226214
12	15306924742075555657
13	7392759013812560317840
14	4441824191762733091989051
15	3268365147290283563408293846
16	2905065653907985007147484366113

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

cp's OEIS Frontend

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).

Table of values

List of values