A304875 - cp's OEIS frontend

A304875 Least prime p2 > p1 such that n^2 = (p1 + p2)/2 and p1 is prime.

n	a(n)
2	5
3	11
4	19
5	31
6	41
7	61
8	67
9	83
10	103
11	139
12	149
13	181
14	199
15	227
16	271
17	307
18	331
19	373
20	421
21	443
22	547
23	571
24	631
25	631
26	691
27	739
28	811
29	853
30	919
31	1039
32	1039
33	1091
34	1249
35	1237
36	1301
37	1447
38	1459
39	1531
40	1621
41	1693
42	1787
43	1867

[5, 11, 19, 31, 41, 61, 67, 83, 103, 139, 149, 181, 199, 227, 271, 307, 331, 373, 421, 443, 547, 571, 631, 631, 691, 739, 811, 853, 919, 1039, 1039, 1091, 1249, 1237, 1301, 1447, 1459, 1531, 1621, 1693, 1787, 1867]

cp's OEIS Frontend

A304875 Least prime p2 > p1 such that n^2 = (p1 + p2)/2 and p1 is prime.

Table of values

List of values