Primes p such that (p-1)/2, (p-2)/3, 2*p+1, 3*p+2 are all prime numbers.

Terms

a(0) =23a(1) =21383a(2) =26459a(3) =28643a(4) =111263a(5) =137339a(6) =217643a(7) =333563a(8) =342599a(9) =423323a(10) =486023a(11) =540539a(12) =548519a(13) =567719a(14) =658943a(15) =671039a(16) =755663a(17) =829463a(18) =865499a(19) =890063a(20) =903803a(21) =976883a(22) =1108259a(23) =1168523a(24) =1199183a(25) =1308383a(26) =1316699a(27) =1318379a(28) =1342403a(29) =1349423