Numbers k such that 1000000000k+1, 1000000000k+3, 1000000000k+7, 1000000000k+9 are all primes.

Terms

a(0) =14965a(1) =16813a(2) =20767a(3) =23083a(4) =34270a(5) =40198a(6) =93238a(7) =112096a(8) =189802a(9) =192484a(10) =251248a(11) =333946a(12) =334969a(13) =363514a(14) =374107a(15) =375127a(16) =376765a(17) =383473a(18) =405046a(19) =419458a(20) =462928a(21) =498139a(22) =649948a(23) =703246a(24) =704374a(25) =732463a(26) =767101a(27) =781885a(28) =806467a(29) =812902