A250177 - cp's OEIS frontend

A250177 Numbers n such that Phi_21(n) is prime, where Phi is the cyclotomic polynomial.

n	a(n)
1	3
2	6
3	7
4	12
5	22
6	27
7	28
8	35
9	41
10	59
11	63
12	69
13	112
14	127
15	132
16	133
17	136
18	140
19	164
20	166
21	202
22	215
23	218
24	276
25	288
26	307
27	323
28	334
29	343
30	377
31	383
32	433
33	474
34	479
35	516
36	519
37	521
38	532
39	538
40	549
41	575
42	586
43	622
44	647
45	675
46	680
47	692
48	733
49	790
50	815
51	822
52	902
53	909
54	911
55	915
56	952
57	966
58	1025
59	1034
60	1048
61	1093

[3, 6, 7, 12, 22, 27, 28, 35, 41, 59, 63, 69, 112, 127, 132, 133, 136, 140, 164, 166, 202, 215, 218, 276, 288, 307, 323, 334, 343, 377, 383, 433, 474, 479, 516, 519, 521, 532, 538, 549, 575, 586, 622, 647, 675, 680, 692, 733, 790, 815, 822, 902, 909, 911, 915, 952, 966, 1025, 1034, 1048, 1093]

cp's OEIS Frontend

A250177 Numbers n such that Phi_21(n) is prime, where Phi is the cyclotomic polynomial.

Table of values

List of values