A218677 - cp's OEIS frontend

A218677 O.g.f.: Sum_{n>=0} n^n * (1+nx)^(2n) * x^n/n! * exp(-nx(1+n*x)^2).

n	a(n)
0	1
1	1
2	3
3	14
4	79
5	516
6	3802
7	30668
8	268815
9	2522594
10	25201736
11	266014607
12	2953171684
13	34326755191
14	416313253084
15	5251970372080
16	68737673434847
17	931207966502919
18	13031639620371226
19	188051624603419973
20	2793741995189126920
21	42668132798523737471
22	669061042470049870917

[1, 1, 3, 14, 79, 516, 3802, 30668, 268815, 2522594, 25201736, 266014607, 2953171684, 34326755191, 416313253084, 5251970372080, 68737673434847, 931207966502919, 13031639620371226, 188051624603419973, 2793741995189126920, 42668132798523737471, 669061042470049870917]

cp's OEIS Frontend

A218677 O.g.f.: Sum_{n>=0} n^n * (1+nx)^(2n) * x^n/n! * exp(-nx(1+n*x)^2).

Table of values

List of values

cp's OEIS Frontend

A218677 O.g.f.: Sum_{n>=0} n^n * (1+n*x)^(2*n) * x^n/n! * exp(-n*x*(1+n*x)^2).

Table of values

List of values

A218677 O.g.f.: Sum_{n>=0} n^n * (1+nx)^(2n) * x^n/n! * exp(-nx(1+n*x)^2).