a(n) is the least number k that is a quadratic residue modulo prime(n) but is a quadratic nonresidue modulo all previous odd primes.
A376999
a(n) is the least number k that is a quadratic residue modulo prime(n) but is a quadratic nonresidue modulo all previous odd primes.
Terms
- a(0) =0a(1) =5a(2) =2a(3) =38a(4) =17a(5) =83a(6) =362a(7) =167a(8) =227a(9) =2273a(10) =398a(11) =5297a(12) =64382a(13) =69467a(14) =116387a(15) =238262a(16) =214037a(17) =430022a(18) =5472953a(19) =9481097a(20) =8062073a(21) =41941577a(22) =86374763a(23) =312521282
External references
- oeis: A376999