First occurrence of run of primes congruent to 1 mod 4 of exactly length n.

Terms

a(0) =5a(1) =13a(2) =89a(3) =389a(4) =2593a(5) =12401a(6) =77069a(7) =262897a(8) =11593a(9) =373649a(10) =766261a(11) =3358169a(12) =12204889a(13) =18256561a(14) =23048897a(15) =12270077a(16) =297387757a(17) =310523021a(18) =297779117a(19) =3670889597a(20) =5344989829a(21) =1481666377a(22) =2572421893a(23) =1113443017a(24) =121117598053a(25) =84676452781a(26) =790457451349a(28) =689101181569