A330832 - cp's OEIS frontend

A330832 Numbers of the form p*q, where p is prime and q=(p^k-1)/(p-1) is also prime for some integer k>1.

n	a(n)
1	6
2	14
3	39
4	62
5	155
6	254
7	3279
8	5219
9	16382
10	19607
11	70643
12	97655
13	208919
14	262142
15	363023
16	402233
17	712979
18	1040603
19	1048574
20	1508597
21	2265383
22	2391483
23	4685519
24	5207819
25	6728903
26	21243689
27	25239899
28	56328959
29	61035155
30	67977559
31	150508643
32	310747739
33	344964203

[6, 14, 39, 62, 155, 254, 3279, 5219, 16382, 19607, 70643, 97655, 208919, 262142, 363023, 402233, 712979, 1040603, 1048574, 1508597, 2265383, 2391483, 4685519, 5207819, 6728903, 21243689, 25239899, 56328959, 61035155, 67977559, 150508643, 310747739, 344964203]

cp's OEIS Frontend

A330832 Numbers of the form p*q, where p is prime and q=(p^k-1)/(p-1) is also prime for some integer k>1.

Table of values

List of values