A138925 - cp's OEIS frontend

A138925 Indices k such that A020504(k)=Phi[k](-5) is prime, where Phi is a cyclotomic polynomial.

n	a(n)
1	5
2	6
3	12
4	14
5	22
6	24
7	26
8	28
9	45
10	48
11	55
12	56
13	67
14	88
15	92
16	94
17	98
18	99
19	101
20	103
21	108
22	114
23	116
24	120
25	229
26	236
27	248
28	254
29	265
30	282
31	288
32	298
33	322
34	347
35	362
36	384
37	399
38	420
39	500
40	536
41	567
42	615
43	620
44	714
45	835
46	992
47	1047
48	1064
49	1238
50	1794
51	1858
52	1962
53	2313
54	2397

[5, 6, 12, 14, 22, 24, 26, 28, 45, 48, 55, 56, 67, 88, 92, 94, 98, 99, 101, 103, 108, 114, 116, 120, 229, 236, 248, 254, 265, 282, 288, 298, 322, 347, 362, 384, 399, 420, 500, 536, 567, 615, 620, 714, 835, 992, 1047, 1064, 1238, 1794, 1858, 1962, 2313, 2397]

cp's OEIS Frontend

A138925 Indices k such that A020504(k)=Phi[k](-5) is prime, where Phi is a cyclotomic polynomial.

Table of values

List of values