A138934 - cp's OEIS frontend

A138934 Indices k such that A019322(k) = Phi[k](4) is prime, where Phi is a cyclotomic polynomial.

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	12
7	16
8	20
9	28
10	40
11	60
12	92
13	96
14	104
15	140
16	148
17	156
18	300
19	356
20	408
21	596
22	612
23	692
24	732
25	756
26	800
27	952
28	996
29	1004
30	1228
31	1268
32	2240
33	2532
34	3060
35	3796
36	3824
37	3944
38	5096
39	5540
40	7476
41	7700
42	8544
43	9800
44	14628
45	15828
46	16908
47	18480
48	20260
49	21924
50	24656
51	38456

[1, 2, 4, 6, 8, 12, 16, 20, 28, 40, 60, 92, 96, 104, 140, 148, 156, 300, 356, 408, 596, 612, 692, 732, 756, 800, 952, 996, 1004, 1228, 1268, 2240, 2532, 3060, 3796, 3824, 3944, 5096, 5540, 7476, 7700, 8544, 9800, 14628, 15828, 16908, 18480, 20260, 21924, 24656, 38456]

cp's OEIS Frontend

A138934 Indices k such that A019322(k) = Phi[k](4) is prime, where Phi is a cyclotomic polynomial.

Table of values

List of values