A093106 - cp's OEIS frontend

A093106 Numbers k such that the k-th cyclotomic polynomial evaluated at 2 (=A019320(k)) is not coprime to k.

n	a(n)
1	6
2	18
3	20
4	21
5	54
6	100
7	110
8	136
9	147
10	155
11	156
12	162
13	253
14	342
15	486
16	500
17	602
18	657
19	812
20	820
21	889
22	979
23	1029
24	1081
25	1210
26	1332
27	1458
28	2028
29	2265
30	2312
31	2485
32	2500
33	2756
34	3081
35	3164
36	3422
37	3660
38	3924
39	4112
40	4374
41	4422
42	4656
43	4805
44	5253
45	5784
46	5819
47	6498

[6, 18, 20, 21, 54, 100, 110, 136, 147, 155, 156, 162, 253, 342, 486, 500, 602, 657, 812, 820, 889, 979, 1029, 1081, 1210, 1332, 1458, 2028, 2265, 2312, 2485, 2500, 2756, 3081, 3164, 3422, 3660, 3924, 4112, 4374, 4422, 4656, 4805, 5253, 5784, 5819, 6498]

cp's OEIS Frontend

A093106 Numbers k such that the k-th cyclotomic polynomial evaluated at 2 (=A019320(k)) is not coprime to k.

Table of values

List of values