a(0)=0, then a(n) = smallest odd k > a(n-1) such that 6*k^prime(n)-1 is prime.

Terms

a(0) =0a(1) =1a(2) =9a(3) =15a(4) =47a(5) =89a(6) =357a(7) =537a(8) =697a(9) =1037a(10) =1257a(11) =1643a(12) =1723a(13) =1995a(14) =2333a(15) =2357a(16) =2863a(17) =3395a(18) =3593a(19) =4795a(20) =5187a(21) =5349a(22) =5469a(23) =5759a(24) =5859a(25) =6339a(26) =6573a(27) =8097a(28) =8653a(29) =8683