A206638 - cp's OEIS frontend

A206638 G.f. satisfies: A(x) = Sum_{n>=0} 3^nA(x)^n x^(n^2) / Product_{k=1..n} (1 - 3x^k)(1 - x^k*A(x)).

n	a(n)
0	1
1	3
2	21
3	147
4	1074
5	8076
6	62454
7	494292
8	3990378
9	32756142
10	272715870
11	2297982828
12	19563641319
13	168036314862
14	1454458825605
15	12674387617266
16	111104771086812
17	979101922849230
18	8668964794053837
19	77080072176742422
20	687976906966730076
21	6161811541538326680

[1, 3, 21, 147, 1074, 8076, 62454, 494292, 3990378, 32756142, 272715870, 2297982828, 19563641319, 168036314862, 1454458825605, 12674387617266, 111104771086812, 979101922849230, 8668964794053837, 77080072176742422, 687976906966730076, 6161811541538326680]

cp's OEIS Frontend

A206638 G.f. satisfies: A(x) = Sum_{n>=0} 3^nA(x)^n x^(n^2) / Product_{k=1..n} (1 - 3x^k)(1 - x^k*A(x)).

Table of values

List of values

cp's OEIS Frontend

A206638 G.f. satisfies: A(x) = Sum_{n>=0} 3^n*A(x)^n * x^(n^2) / Product_{k=1..n} (1 - 3*x^k)*(1 - x^k*A(x)).

Table of values

List of values

A206638 G.f. satisfies: A(x) = Sum_{n>=0} 3^nA(x)^n x^(n^2) / Product_{k=1..n} (1 - 3x^k)(1 - x^k*A(x)).