Numbers k such that k![6] + 2 is prime, where k![6] = A085158(k) = sextuple factorial.

Terms

a(0) =0a(1) =1a(2) =3a(3) =5a(4) =9a(5) =17a(6) =27a(7) =45a(8) =51a(9) =53a(10) =93a(11) =197a(12) =213a(13) =221a(14) =245a(15) =279a(16) =845a(17) =927a(18) =2055a(19) =2895a(20) =3615a(21) =5613a(22) =12753a(23) =15737a(24) =17813a(25) =18545a(26) =22629a(27) =47859a(28) =48797