A320649 - cp's OEIS frontend

A320649 Expansion of 1/(1 - Sum_{k>=1} k^2*x^k/(1 - x^k)).

n	a(n)
0	1
1	1
2	6
3	21
4	82
5	294
6	1116
7	4103
8	15326
9	56833
10	211454
11	785441
12	2920058
13	10851016
14	40331874
15	149892024
16	557098510
17	2070493098
18	7695228038
19	28600012305
20	106294901116
21	395055313662
22	1468262641770
23	5456942875386
24	20281270503914
25	75377349437075
26	280147395367820

[1, 1, 6, 21, 82, 294, 1116, 4103, 15326, 56833, 211454, 785441, 2920058, 10851016, 40331874, 149892024, 557098510, 2070493098, 7695228038, 28600012305, 106294901116, 395055313662, 1468262641770, 5456942875386, 20281270503914, 75377349437075, 280147395367820]

cp's OEIS Frontend

A320649 Expansion of 1/(1 - Sum_{k>=1} k^2*x^k/(1 - x^k)).

Table of values

List of values