Numbers n for which 2*n+5, 4*n+5, 6*n+5, and 8*n+5 are primes.

Terms

a(0) =0a(1) =3a(2) =6a(3) =21a(4) =24a(5) =48a(6) =63a(7) =126a(8) =213a(9) =237a(10) =297a(11) =318a(12) =402a(13) =609a(14) =657a(15) =714a(16) =783a(17) =864a(18) =948a(19) =1053a(20) =1287a(21) =1347a(22) =1449a(23) =1581a(24) =1683a(25) =2166a(26) =2184a(27) =2358a(28) =2457a(29) =2463