A290815 - cp's OEIS frontend

A290815 Numbers m such that the numerator of Sum_{k=1..m, gcd(k,m) = 1} 1/k is divisible by m^3.

n	a(n)
1	1
2	39
3	78
4	155
5	310
6	465
7	546
8	793
9	798
10	930
11	1092
12	1586
13	1638
14	1860
15	2170
16	2379
17	2394
18	3172
19	3276
20	3965
21	4340
22	4758
23	4914
24	5219
25	6045
26	6510
27	7137
28	7182
29	7930
30	9516
31	9828
32	10374
33	10438
34	11102
35	11895
36	12090
37	13020
38	14274
39	15657
40	15860
41	16843
42	16891
43	18135

[1, 39, 78, 155, 310, 465, 546, 793, 798, 930, 1092, 1586, 1638, 1860, 2170, 2379, 2394, 3172, 3276, 3965, 4340, 4758, 4914, 5219, 6045, 6510, 7137, 7182, 7930, 9516, 9828, 10374, 10438, 11102, 11895, 12090, 13020, 14274, 15657, 15860, 16843, 16891, 18135]

cp's OEIS Frontend

A290815 Numbers m such that the numerator of Sum_{k=1..m, gcd(k,m) = 1} 1/k is divisible by m^3.

Table of values

List of values