A218678 - cp's OEIS frontend

A218678 O.g.f.: Sum_{n>=0} n^n * (1+nx)^(3n) * x^n/n! * exp(-nx(1+n*x)^3).

n	a(n)
0	1
1	1
2	4
3	22
4	161
5	1321
6	12541
7	130383
8	1482875
9	18153076
10	237430711
11	3295833146
12	48274094584
13	742868875984
14	11963384310515
15	200974595790271
16	3511980095379727
17	63682377891348689
18	1195661594431548085
19	23199930176668566579
20	464421513762097397125
21	9576744471125816269165

[1, 1, 4, 22, 161, 1321, 12541, 130383, 1482875, 18153076, 237430711, 3295833146, 48274094584, 742868875984, 11963384310515, 200974595790271, 3511980095379727, 63682377891348689, 1195661594431548085, 23199930176668566579, 464421513762097397125, 9576744471125816269165]

cp's OEIS Frontend

A218678 O.g.f.: Sum_{n>=0} n^n * (1+nx)^(3n) * x^n/n! * exp(-nx(1+n*x)^3).

Table of values

List of values

cp's OEIS Frontend

A218678 O.g.f.: Sum_{n>=0} n^n * (1+n*x)^(3*n) * x^n/n! * exp(-n*x*(1+n*x)^3).

Table of values

List of values

A218678 O.g.f.: Sum_{n>=0} n^n * (1+nx)^(3n) * x^n/n! * exp(-nx(1+n*x)^3).