A305572 - cp's OEIS frontend

A305572 a(n) = (-1)^(n-1) + Sum_{d|n, d>1} a(n/d)^d.

n	a(n)
1	1
2	0
3	2
4	0
5	2
6	4
7	2
8	0
9	10
10	4
11	2
12	32
13	2
14	4
15	42
16	0
17	2
18	228
19	2
20	32
21	138
22	4
23	2
24	1536
25	34
26	4
27	1514
28	32
29	2
30	3940
31	2
32	0
33	2058
34	4
35	162
36	102944
37	2
38	4
39	8202
40	1536
41	2
42	51940
43	2
44	32
45	207370
46	4
47	2
48	3538944
49	130
50	3204
51	131082
52	32
53	2
54	15668836
55	2082
56	1536
57	524298
58	4
59	2
60	54327840

[1, 0, 2, 0, 2, 4, 2, 0, 10, 4, 2, 32, 2, 4, 42, 0, 2, 228, 2, 32, 138, 4, 2, 1536, 34, 4, 1514, 32, 2, 3940, 2, 0, 2058, 4, 162, 102944, 2, 4, 8202, 1536, 2, 51940, 2, 32, 207370, 4, 2, 3538944, 130, 3204, 131082, 32, 2, 15668836, 2082, 1536, 524298, 4, 2, 54327840]

cp's OEIS Frontend

A305572 a(n) = (-1)^(n-1) + Sum_{d|n, d>1} a(n/d)^d.

Table of values

List of values