A235920 - cp's OEIS frontend

A235920 Primes p with prime(p) - p + 1 and (p^2 - 1)/4 - prime(p) both prime.

n	a(n)
1	17
2	31
3	41
4	43
5	61
6	71
7	83
8	103
9	109
10	173
11	181
12	211
13	271
14	349
15	353
16	541
17	661
18	673
19	743
20	811
21	911
22	953
23	971
24	1171
25	1429
26	1471
27	1483
28	1723
29	1787
30	2053
31	2203
32	2579
33	2749
34	3019
35	3299
36	3391
37	3433
38	3463
39	3727
40	3917
41	4003
42	4021
43	4049
44	4243
45	4447
46	4567
47	4657
48	4729
49	4801
50	4993

[17, 31, 41, 43, 61, 71, 83, 103, 109, 173, 181, 211, 271, 349, 353, 541, 661, 673, 743, 811, 911, 953, 971, 1171, 1429, 1471, 1483, 1723, 1787, 2053, 2203, 2579, 2749, 3019, 3299, 3391, 3433, 3463, 3727, 3917, 4003, 4021, 4049, 4243, 4447, 4567, 4657, 4729, 4801, 4993]

cp's OEIS Frontend

A235920 Primes p with prime(p) - p + 1 and (p^2 - 1)/4 - prime(p) both prime.

Table of values

List of values