A225958 - cp's OEIS frontend

A225958 O.g.f.: exp( Sum_{n>=1} (sigma(2n^3) - sigma(n^3)) x^n/n ).

n	a(n)
0	1
1	2
2	10
3	44
4	134
5	468
6	1524
7	4584
8	13862
9	40566
10	114880
11	321052
12	879092
13	2360156
14	6248864
15	16297384
16	41902454
17	106437600
18	267149022
19	662979572
20	1628437160
21	3960377672
22	9541519732
23	22786066280
24	53958062564
25	126750346970
26	295476011176
27	683776368416
28	1571299804688

[1, 2, 10, 44, 134, 468, 1524, 4584, 13862, 40566, 114880, 321052, 879092, 2360156, 6248864, 16297384, 41902454, 106437600, 267149022, 662979572, 1628437160, 3960377672, 9541519732, 22786066280, 53958062564, 126750346970, 295476011176, 683776368416, 1571299804688]

cp's OEIS Frontend

A225958 O.g.f.: exp( Sum_{n>=1} (sigma(2n^3) - sigma(n^3)) x^n/n ).

Table of values

List of values

cp's OEIS Frontend

A225958 O.g.f.: exp( Sum_{n>=1} (sigma(2*n^3) - sigma(n^3)) * x^n/n ).

Table of values

List of values

A225958 O.g.f.: exp( Sum_{n>=1} (sigma(2n^3) - sigma(n^3)) x^n/n ).