A099008 - cp's OEIS frontend

A099008 Numbers n such that the denominator of the 2n-th Bernoulli number is divisible by n but sum_{d|n} sigma(d)/phi(d) is not an integer.

n	a(n)
1	546
2	903
3	1806
4	2730
5	6162
6	6510
7	9030
8	10230
9	12090
10	12246
11	12810
12	15834
13	20130
14	20670
15	23478
16	23790
17	28938
18	30030
19	30810
20	43134
21	44310
22	52374
23	56730
24	61230
25	71610
26	79170
27	84630
28	85722
29	88410
30	99330
31	109230
32	117390
33	132990
34	140910
35	144690
36	154770
37	164010

[546, 903, 1806, 2730, 6162, 6510, 9030, 10230, 12090, 12246, 12810, 15834, 20130, 20670, 23478, 23790, 28938, 30030, 30810, 43134, 44310, 52374, 56730, 61230, 71610, 79170, 84630, 85722, 88410, 99330, 109230, 117390, 132990, 140910, 144690, 154770, 164010]

cp's OEIS Frontend

A099008 Numbers n such that the denominator of the 2n-th Bernoulli number is divisible by n but sum_{d|n} sigma(d)/phi(d) is not an integer.

Table of values

List of values