A138940 - cp's OEIS frontend

A138940 Indices n such that A019328(n) = Phi(n,10) is prime, where Phi is a cyclotomic polynomial.

n	a(n)
1	2
2	4
3	10
4	12
5	14
6	19
7	23
8	24
9	36
10	38
11	39
12	48
13	62
14	93
15	106
16	120
17	134
18	150
19	196
20	317
21	320
22	385
23	586
24	597
25	654
26	738
27	945
28	1031
29	1172
30	1282
31	1404
32	1426
33	1452
34	1521
35	1752
36	1812
37	1836
38	1844
39	1862
40	2134
41	2232
42	2264
43	2667
44	3750
45	3903
46	3927
47	4274
48	4354
49	5877
50	6022

[2, 4, 10, 12, 14, 19, 23, 24, 36, 38, 39, 48, 62, 93, 106, 120, 134, 150, 196, 317, 320, 385, 586, 597, 654, 738, 945, 1031, 1172, 1282, 1404, 1426, 1452, 1521, 1752, 1812, 1836, 1844, 1862, 2134, 2232, 2264, 2667, 3750, 3903, 3927, 4274, 4354, 5877, 6022]

cp's OEIS Frontend

A138940 Indices n such that A019328(n) = Phi(n,10) is prime, where Phi is a cyclotomic polynomial.

Table of values

List of values