A231847 - cp's OEIS frontend

A231847 Primes p such that p*(p+1)/2 + 1 is a prime.

n	a(n)
1	3
2	7
3	11
4	19
5	23
6	43
7	47
8	71
9	107
10	131
11	163
12	167
13	179
14	211
15	223
16	251
17	271
18	307
19	359
20	419
21	431
22	439
23	443
24	467
25	503
26	571
27	691
28	751
29	811
30	827
31	839
32	863
33	907
34	947
35	967
36	971
37	991
38	1019
39	1031
40	1063
41	1091
42	1103
43	1187
44	1279
45	1427
46	1483
47	1499
48	1559
49	1583
50	1607
51	1723
52	1759
53	1783

[3, 7, 11, 19, 23, 43, 47, 71, 107, 131, 163, 167, 179, 211, 223, 251, 271, 307, 359, 419, 431, 439, 443, 467, 503, 571, 691, 751, 811, 827, 839, 863, 907, 947, 967, 971, 991, 1019, 1031, 1063, 1091, 1103, 1187, 1279, 1427, 1483, 1499, 1559, 1583, 1607, 1723, 1759, 1783]

cp's OEIS Frontend

A231847 Primes p such that p*(p+1)/2 + 1 is a prime.

Table of values

List of values