A001990 - cp's OEIS frontend

A001990 Let p be the n-th odd prime. a(n) is the least prime congruent to 5 modulo 8 such that Legendre(-a(n), q) = -Legendre(-2, q) for all odd primes q <= p.

n	a(n)
1	5
2	29
3	29
4	29
5	29
6	29
7	29
8	29
9	23669
10	23669
11	23669
12	23669
13	23669
14	23669
15	1508789
16	5025869
17	9636461
18	9636461
19	9636461
20	37989701
21	37989701
22	37989701
23	37989701
24	37989701
25	240511301
26	240511301

[5, 29, 29, 29, 29, 29, 29, 29, 23669, 23669, 23669, 23669, 23669, 23669, 1508789, 5025869, 9636461, 9636461, 9636461, 37989701, 37989701, 37989701, 37989701, 37989701, 240511301, 240511301]

cp's OEIS Frontend

A001990 Let p be the n-th odd prime. a(n) is the least prime congruent to 5 modulo 8 such that Legendre(-a(n), q) = -Legendre(-2, q) for all odd primes q <= p.

Table of values

List of values