A308381 - cp's OEIS frontend

A308381 Expansion of e.g.f. exp(Sum_{k>=1} x^(k^2)(2 + x^(k^2))/(2k^2)).

n	a(n)
0	1
1	1
2	2
3	4
4	16
5	56
6	256
7	1072
8	11264
9	119296
10	1075456
11	9088256
12	85292032
13	894690304
14	8968964096
15	90882789376
16	2409397682176
17	40515889528832
18	1051789297844224
19	16251803853193216
20	302342408330018816
21	4444559976664662016
22	84010278329827459072
23	1289319649553742823424

[1, 1, 2, 4, 16, 56, 256, 1072, 11264, 119296, 1075456, 9088256, 85292032, 894690304, 8968964096, 90882789376, 2409397682176, 40515889528832, 1051789297844224, 16251803853193216, 302342408330018816, 4444559976664662016, 84010278329827459072, 1289319649553742823424]

cp's OEIS Frontend

A308381 Expansion of e.g.f. exp(Sum_{k>=1} x^(k^2)(2 + x^(k^2))/(2k^2)).

Table of values

List of values

cp's OEIS Frontend

A308381 Expansion of e.g.f. exp(Sum_{k>=1} x^(k^2)*(2 + x^(k^2))/(2*k^2)).

Table of values

List of values

A308381 Expansion of e.g.f. exp(Sum_{k>=1} x^(k^2)(2 + x^(k^2))/(2k^2)).