Let p be the n-th odd prime. Then a(n) is the least prime congruent to 3 modulo 8 such that Legendre(-a(n), q) = -1 for all odd primes q <= p.
A001986
Let p be the n-th odd prime. Then a(n) is the least prime congruent to 3 modulo 8 such that Legendre(-a(n), q) = -1 for all odd primes q <= p.
Terms
- a(0) =19a(1) =43a(2) =43a(3) =67a(4) =67a(5) =163a(6) =163a(7) =163a(8) =163a(9) =163a(10) =163a(11) =222643a(12) =1333963a(13) =1333963a(14) =2404147a(15) =2404147a(16) =20950603a(17) =51599563a(18) =51599563a(19) =96295483a(20) =96295483a(21) =146161723a(22) =1408126003a(23) =3341091163a(24) =3341091163a(25) =3341091163a(26) =52947440683a(27) =52947440683a(28) =52947440683a(29) =193310265163
External references
- oeis: A001986