Numbers k such that prime(k) divides primorial(j) + 1 for exactly two integers j.

Terms

a(0) =59a(1) =177a(2) =221a(3) =260a(4) =285a(5) =431a(6) =476a(7) =489a(8) =625a(9) =653a(10) =686a(11) =860a(12) =957a(13) =1320a(14) =1334a(15) =1734a(16) =1987a(17) =2140a(18) =2215a(19) =2854a(20) =2991a(21) =3051a(22) =3341a(23) =3455a(24) =3535a(25) =3591a(26) =3645a(27) =3695a(28) =3798a(29) =4020