A304874 - cp's OEIS frontend

A304874 Greatest prime p1 < p2 such that n^2 = (p1 + p2)/2 and p2 is prime.

n	a(n)
2	3
3	7
4	13
5	19
6	31
7	37
8	61
9	79
10	97
11	103
12	139
13	157
14	193
15	223
16	241
17	271
18	317
19	349
20	379
21	439
22	421
23	487
24	521
25	619
26	661
27	719
28	757
29	829
30	881
31	883
32	1009
33	1087
34	1063
35	1213
36	1291
37	1291
38	1429
39	1511
40	1579
41	1669
42	1741
43	1831
44	1879

[3, 7, 13, 19, 31, 37, 61, 79, 97, 103, 139, 157, 193, 223, 241, 271, 317, 349, 379, 439, 421, 487, 521, 619, 661, 719, 757, 829, 881, 883, 1009, 1087, 1063, 1213, 1291, 1291, 1429, 1511, 1579, 1669, 1741, 1831, 1879]

cp's OEIS Frontend

A304874 Greatest prime p1 < p2 such that n^2 = (p1 + p2)/2 and p2 is prime.

Table of values

List of values