First occurrence of run of primes congruent to 3 mod 4 of exactly length n.

Terms

a(0) =3a(1) =7a(2) =739a(3) =199a(4) =883a(5) =13127a(6) =463a(7) =36551a(8) =39607a(9) =183091a(10) =4468903a(11) =6419299a(12) =241603a(13) =11739307a(14) =9177431a(15) =95949311a(16) =105639091a(17) =341118307a(18) =1800380579a(19) =727334879a(20) =9449915743a(21) =1786054147a(22) =22964264027a(23) =54870713243a(24) =79263248027a(25) =454648144571a(26) =722204126767a(31) =113391385603