Primes at which difference pattern X4242Y (X and Y >= 6) occurs in A001223.

Terms

a(0) =1867a(1) =3457a(2) =5647a(3) =15727a(4) =79687a(5) =88807a(6) =101107a(7) =257857a(8) =266677a(9) =276037a(10) =284737a(11) =340927a(12) =354247a(13) =375247a(14) =402757a(15) =419047a(16) =427237a(17) =463447a(18) =470077a(19) =626617a(20) =666427a(21) =736357a(22) =823717a(23) =855727a(24) =959467a(25) =978067a(26) =1022377a(27) =1043587a(28) =1068247a(29) =1118857