A260654 - cp's OEIS frontend

A260654 Numbers k such that Sum_{i=1..k} sigma(i)^d(i) == 0 (mod k), where sigma = A000203 and d = A000005.

n	a(n)
1	1
2	2
3	5
4	56
5	59
6	60
7	75
8	122
9	743
10	2835
11	3951
12	5712
13	6866
14	7884
15	14754
16	18751
17	292123
18	465289
19	1921892
20	3902477
21	7609760
22	21855984
23	22013406
24	358753359
25	570535294
26	582046711
27	1846338478
28	13691385818

[1, 2, 5, 56, 59, 60, 75, 122, 743, 2835, 3951, 5712, 6866, 7884, 14754, 18751, 292123, 465289, 1921892, 3902477, 7609760, 21855984, 22013406, 358753359, 570535294, 582046711, 1846338478, 13691385818]

cp's OEIS Frontend

A260654 Numbers k such that Sum_{i=1..k} sigma(i)^d(i) == 0 (mod k), where sigma = A000203 and d = A000005.

Table of values

List of values