Primes with 2 representations: p*q*r - 1 = u*v*w + 1 where p, q, r, u, v and w are primes.

Terms

a(0) =19a(1) =29a(2) =43a(3) =67a(4) =173a(5) =283a(6) =317a(7) =653a(8) =787a(9) =907a(10) =1867a(11) =2083a(12) =2693a(13) =2803a(14) =3413a(15) =3643a(16) =3677a(17) =4253a(18) =4363a(19) =4723a(20) =5443a(21) =5717a(22) =6197a(23) =6547a(24) =6653a(25) =8563a(26) =8573a(27) =9067a(28) =9187a(29) =9403