Numbers k such that (292*10^k - 1)/3 is prime.

Terms

a(0) =0a(1) =2a(2) =4a(3) =9a(4) =14a(5) =20a(6) =28a(7) =33a(8) =156a(9) =285a(10) =302a(11) =1121a(12) =1300a(13) =2540a(14) =3873a(15) =4706a(16) =5297a(17) =7292a(18) =11086a(19) =15928a(20) =16203a(21) =17267a(22) =17793a(23) =19326a(24) =32009a(25) =67659