Numbers k such that (k,k+8) forms a pair of consecutive primes ending respectively in 1 and 9.

Terms

a(0) =401a(1) =491a(2) =701a(3) =761a(4) =911a(5) =1571a(6) =2531a(7) =2741a(8) =3011a(9) =3041a(10) =3221a(11) =3491a(12) =3701a(13) =3881a(14) =4751a(15) =5051a(16) =5171a(17) =6221a(18) =6521a(19) =7151a(20) =7691a(21) =8171a(22) =8681a(23) =9311a(24) =9941a(25) =10151a(26) =10391a(27) =10631a(28) =10781a(29) =11321