Numbers k such that 19 is the largest prime factor of k^2 - 1.

Terms

a(0) =18a(1) =20a(2) =37a(3) =39a(4) =56a(5) =77a(6) =113a(7) =134a(8) =151a(9) =153a(10) =170a(11) =191a(12) =246a(13) =265a(14) =305a(15) =324a(16) =341a(17) =362a(18) =379a(19) =417a(20) =419a(21) =571a(22) =626a(23) =647a(24) =664a(25) =685a(26) =721a(27) =799a(28) =911a(29) =951