Primes at which the difference pattern X,2,4,2,Y (X and Y >= 6) occurs in A001223.

Terms

a(0) =191a(1) =821a(2) =2081a(3) =3251a(4) =9431a(5) =13001a(6) =15641a(7) =18041a(8) =18911a(9) =25301a(10) =31721a(11) =34841a(12) =51341a(13) =62981a(14) =67211a(15) =69491a(16) =72221a(17) =77261a(18) =81041a(19) =82721a(20) =97841a(21) =99131a(22) =109841a(23) =116531a(24) =119291a(25) =122201a(26) =135461a(27) =157271a(28) =171161a(29) =187631