A225925 - cp's OEIS frontend

A225925 G.f.: exp( Sum_{n>=1} A002129(n^2)*x^n/n ), where A002129(n) is the excess of sum of odd divisors of n over sum of even divisors of n.

n	a(n)
0	1
1	1
2	-2
3	2
4	-1
5	-7
6	8
7	-14
8	1
9	11
10	-23
11	43
12	-54
13	38
14	17
15	-55
16	162
17	-198
18	257
19	-175
20	69
21	141
22	-518
23	764
24	-1049
25	1215
26	-1241
27	549
28	161
29	-1625
30	3192
31	-5176
32	6782
33	-7568
34	7267
35	-4263
36	-788
37	8394
38	-17866
39	29782
40	-39041
41	46101
42	-45857
43	36551
44	-14591
45	-20937
46	70638
47	-129520
48	190994
49	-245846
50	280560

[1, 1, -2, 2, -1, -7, 8, -14, 1, 11, -23, 43, -54, 38, 17, -55, 162, -198, 257, -175, 69, 141, -518, 764, -1049, 1215, -1241, 549, 161, -1625, 3192, -5176, 6782, -7568, 7267, -4263, -788, 8394, -17866, 29782, -39041, 46101, -45857, 36551, -14591, -20937, 70638, -129520, 190994, -245846, 280560]

cp's OEIS Frontend

A225925 G.f.: exp( Sum_{n>=1} A002129(n^2)*x^n/n ), where A002129(n) is the excess of sum of odd divisors of n over sum of even divisors of n.

Table of values

List of values