Numbers k such that k! - prime(k) is prime.

Terms

a(0) =4a(1) =5a(2) =7a(3) =12a(4) =14a(5) =15a(6) =16a(7) =17a(8) =18a(9) =20a(10) =30a(11) =37a(12) =39a(13) =49a(14) =52a(15) =66a(16) =86a(17) =162a(18) =165a(19) =202a(20) =235a(21) =250a(22) =366a(23) =419a(24) =1169a(25) =1311a(26) =1916a(27) =3032a(28) =3211a(29) =3335