Least integer k > 0 such that prime(k) - k*n is prime.

Terms

a(0) =3a(1) =7a(2) =13a(3) =31a(4) =69a(5) =190a(6) =444a(7) =1052a(8) =2702a(9) =6455a(10) =15928a(11) =40073a(12) =100370a(13) =251707a(14) =637321a(15) =1617175a(16) =4124448a(17) =10553415a(18) =27066978a(19) =69709680a(20) =179992909a(21) =465769803a(22) =1208198532a(23) =3140421716a(24) =8179002120a(25) =21338685408a(26) =55762149030a(27) =145935689361a(28) =382465573486