A096640 - cp's OEIS frontend

A096640 Smallest prime p == 7 mod 8 (A007521) and p > prime(n+2) such that p is a quadratic residue mod the first n odd primes 3, 5, 7, 11, ..., prime(n+1), and p is a quadratic non-residue mod prime(n+2).

n	a(n)
0	23
1	7
2	31
3	79
4	631
5	751
6	2311
7	21319
8	48799
9	82471
10	256279
11	78439
12	1768831
13	1365079
14	2631511
15	1427911
16	4355311
17	5715319
18	49196359
19	117678031
20	180628639
21	475477759
22	452980999

[23, 7, 31, 79, 631, 751, 2311, 21319, 48799, 82471, 256279, 78439, 1768831, 1365079, 2631511, 1427911, 4355311, 5715319, 49196359, 117678031, 180628639, 475477759, 452980999]

cp's OEIS Frontend

A096640 Smallest prime p == 7 mod 8 (A007521) and p > prime(n+2) such that p is a quadratic residue mod the first n odd primes 3, 5, 7, 11, ..., prime(n+1), and p is a quadratic non-residue mod prime(n+2).

Table of values

List of values