A216247 - cp's OEIS frontend

A216247 O.g.f. satisfies: A(x) = Sum_{n>=0} n^n * x^n * A(n^2x^2)^n/n! exp(-nxA(n^2*x^2)).

n	a(n)
0	1
1	1
2	1
3	2
4	15
5	77
6	354
7	2509
8	19369
9	146840
10	1321773
11	13466872
12	151177886
13	1827144180
14	23686530621
15	335038346222
16	4922031402993
17	75768551557262
18	1240672912146220
19	21264349760865217
20	384135346377854363
21	7286741020161077248
22	145190876484745421540

[1, 1, 1, 2, 15, 77, 354, 2509, 19369, 146840, 1321773, 13466872, 151177886, 1827144180, 23686530621, 335038346222, 4922031402993, 75768551557262, 1240672912146220, 21264349760865217, 384135346377854363, 7286741020161077248, 145190876484745421540]

cp's OEIS Frontend

A216247 O.g.f. satisfies: A(x) = Sum_{n>=0} n^n * x^n * A(n^2x^2)^n/n! exp(-nxA(n^2*x^2)).

Table of values

List of values

cp's OEIS Frontend

A216247 O.g.f. satisfies: A(x) = Sum_{n>=0} n^n * x^n * A(n^2*x^2)^n/n! * exp(-n*x*A(n^2*x^2)).

Table of values

List of values

A216247 O.g.f. satisfies: A(x) = Sum_{n>=0} n^n * x^n * A(n^2x^2)^n/n! exp(-nxA(n^2*x^2)).