Irregular triangle of numbers k such that A002313(n), the n-th prime not congruent to 3 mod 4, is the largest prime factor of k^2 + 1.

A223702

Irregular triangle of numbers k such that A002313(n), the n-th prime not congruent to 3 mod 4, is the largest prime factor of k^2 + 1.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =7a(4) =5a(5) =8a(6) =18a(7) =57a(8) =239a(9) =4a(10) =13a(11) =21a(12) =38a(13) =47a(14) =268a(15) =12a(16) =17a(17) =41a(18) =70a(19) =99a(20) =157a(21) =307a(22) =6a(23) =31a(24) =43a(25) =68a(26) =117a(27) =191a(28) =302a(29) =327

External references