Numbers k such that prime(k) == 7 (mod k).

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =18a(5) =36a(6) =78a(7) =191a(8) =6456a(9) =6457a(10) =40080a(11) =40081a(12) =637324a(13) =637326a(14) =637344a(15) =10553425a(16) =10553434a(17) =10553477a(18) =10553502a(19) =10553573a(20) =10553854a(21) =27066988a(22) =27067126a(23) =69709680a(24) =69709736a(25) =69709940a(26) =465769818a(27) =3140421716a(28) =3140421740a(29) =3140421743