Numbers m such that 6m-1, 6m+1 are twin primes.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =7a(5) =10a(6) =12a(7) =17a(8) =18a(9) =23a(10) =25a(11) =30a(12) =32a(13) =33a(14) =38a(15) =40a(16) =45a(17) =47a(18) =52a(19) =58a(20) =70a(21) =72a(22) =77a(23) =87a(24) =95a(25) =100a(26) =103a(27) =107a(28) =110a(29) =135