Smallest prime p of form p = 8k-1 such that first n primes (p_1=2, ..., p_n) are quadratic residues mod p.

A002223

Smallest prime p of form p = 8k-1 such that first n primes (p_1=2, ..., p_n) are quadratic residues mod p.

Terms

    a(0) =7a(1) =23a(2) =71a(3) =311a(4) =479a(5) =1559a(6) =5711a(7) =10559a(8) =18191a(9) =31391a(10) =366791a(11) =366791a(12) =366791a(13) =4080359a(14) =12537719a(15) =30706079a(16) =36415991a(17) =82636319a(18) =120293879a(19) =120293879a(20) =131486759a(21) =131486759a(22) =2929911599a(23) =2929911599a(24) =7979490791a(25) =33857579279

External references