A359812 - cp's OEIS frontend

A359812 a(n) = Sum_{d|n} (-1)^(d-1) * d^(n/d-1).

n	a(n)
1	1
2	0
3	2
4	-2
5	2
6	-1
7	2
8	-12
9	11
10	-11
11	2
12	-27
13	2
14	-57
15	108
16	-200
17	2
18	-40
19	2
20	-653
21	780
22	-1013
23	2
24	-1177
25	627
26	-4083
27	6644
28	-11959
29	2
30	5043
31	2
32	-49680
33	59172
34	-65519
35	18028
36	-26670
37	2
38	-262125
39	531612
40	-713423
41	2
42	515723
43	2
44	-3144419
45	5180382
46	-4194281
47	2

[1, 0, 2, -2, 2, -1, 2, -12, 11, -11, 2, -27, 2, -57, 108, -200, 2, -40, 2, -653, 780, -1013, 2, -1177, 627, -4083, 6644, -11959, 2, 5043, 2, -49680, 59172, -65519, 18028, -26670, 2, -262125, 531612, -713423, 2, 515723, 2, -3144419, 5180382, -4194281, 2]

cp's OEIS Frontend

A359812 a(n) = Sum_{d|n} (-1)^(d-1) * d^(n/d-1).

Table of values

List of values