A138938 - cp's OEIS frontend

A138938 Indices k such that A019326(k)=Phi[k](8) is prime, where Phi is a cyclotomic polynomial.

n	a(n)
1	1
2	3
3	9
4	30
5	42
6	78
7	87
8	138
9	189
10	303
11	318
12	330
13	408
14	462
15	504
16	561
17	1002
18	1389
19	1746
20	1794
21	2040
22	2418
23	2790
24	3894
25	4077
26	4722
27	6738
28	10641
29	14610
30	14616
31	15294
32	16662
33	18966
34	19059
35	26142
36	27144
37	28299
38	31638
39	33639
40	39360

[1, 3, 9, 30, 42, 78, 87, 138, 189, 303, 318, 330, 408, 462, 504, 561, 1002, 1389, 1746, 1794, 2040, 2418, 2790, 3894, 4077, 4722, 6738, 10641, 14610, 14616, 15294, 16662, 18966, 19059, 26142, 27144, 28299, 31638, 33639, 39360]

cp's OEIS Frontend

A138938 Indices k such that A019326(k)=Phi[k](8) is prime, where Phi is a cyclotomic polynomial.

Table of values

List of values