Primes of form 4*p^2 + 1, p prime.

Terms

a(0) =17a(1) =37a(2) =101a(3) =197a(4) =677a(5) =5477a(6) =8837a(7) =17957a(8) =21317a(9) =42437a(10) =98597a(11) =106277a(12) =148997a(13) =217157a(14) =401957a(15) =454277a(16) =1196837a(17) =1378277a(18) =1674437a(19) =1705637a(20) =1833317a(21) =1865957a(22) =2390117a(23) =2735717a(24) =3118757a(25) =3147077a(26) =3587237a(27) =3865157a(28) =4104677a(29) =4519877