Numbers k such that k*prime(k) -+ 1 are twin primes.

Terms

a(0) =2a(1) =30a(2) =72a(3) =144a(4) =312a(5) =336a(6) =510a(7) =690a(8) =990a(9) =1122a(10) =1254a(11) =1272a(12) =1410a(13) =2082a(14) =2376a(15) =2508a(16) =2586a(17) =2664a(18) =2802a(19) =3060a(20) =3096a(21) =3180a(22) =3432a(23) =3510a(24) =3684a(25) =4062a(26) =4506a(27) =5526a(28) =5790a(29) =6174