Numbers k such that k, k+2, k+4, k+6, k+8, k+10, k+12 are semiprimes.

Terms

a(0) =3091a(1) =8129a(2) =8131a(3) =9983a(4) =9985a(5) =55559a(6) =92603a(7) =99443a(8) =99445a(9) =112709a(10) =132077a(11) =132079a(12) =182749a(13) =190937a(14) =190939a(15) =209479a(16) =237449a(17) =237451a(18) =239089a(19) =249689a(20) =296779a(21) =300449a(22) =313411a(23) =401429a(24) =401431a(25) =441677a(26) =441679a(27) =452639a(28) =452641a(29) =547157