Primes p, not safe primes, such that the smallest factor of (2^(p-1)-1) / 3 is equal to p.

Terms

a(0) =443a(1) =647a(2) =1847a(3) =2243a(4) =2687a(5) =2699a(6) =6263a(7) =6563a(8) =7487a(9) =7583a(10) =8627a(11) =8663a(12) =9419a(13) =9767a(14) =10223a(15) =11867a(16) =12323a(17) =13187a(18) =13907a(19) =14627a(20) =14723a(21) =14783a(22) =17747a(23) =17783a(24) =19739a(25) =20639a(26) =20807a(27) =21863a(28) =22307a(29) =23747