A174461 - cp's OEIS frontend

A174461 G.f.: exp( Sum_{n>=1} A174462(n)*x^n/n ) where A174462(n) = Sum_{d|n} C(n,d)^2.

n	a(n)
0	1
1	1
2	3
3	6
4	21
5	32
6	174
7	236
8	1310
9	2609
10	12579
11	18150
12	150980
13	198821
14	1471346
15	2645433
16	17956158
17	24534384
18	234506155
19	304507520
20	2773986000
21	4315363549
22	36311714888
23	47769153478
24	500399410005
25	637747787407
26	6468558255893
27	9142971548460
28	88936892205131

[1, 1, 3, 6, 21, 32, 174, 236, 1310, 2609, 12579, 18150, 150980, 198821, 1471346, 2645433, 17956158, 24534384, 234506155, 304507520, 2773986000, 4315363549, 36311714888, 47769153478, 500399410005, 637747787407, 6468558255893, 9142971548460, 88936892205131]

cp's OEIS Frontend

A174461 G.f.: exp( Sum_{n>=1} A174462(n)*x^n/n ) where A174462(n) = Sum_{d|n} C(n,d)^2.

Table of values

List of values