Numbers k such that (26*10^k - 77)/3 is prime.

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =11a(5) =12a(6) =15a(7) =27a(8) =36a(9) =108a(10) =110a(11) =115a(12) =127a(13) =155a(14) =958a(15) =2782a(16) =3090a(17) =6520a(18) =9857a(19) =14543a(20) =21919a(21) =23659a(22) =24727a(23) =49039a(24) =92546a(25) =114317a(26) =131180a(27) =146856a(28) =204730a(29) =219639