Primes p such that p + 4, p + 12 and p + 16 are also primes.

Terms

a(0) =7a(1) =67a(2) =97a(3) =487a(4) =757a(5) =1567a(6) =1597a(7) =2377a(8) =3907a(9) =7687a(10) =8677a(11) =12097a(12) =12907a(13) =13147a(14) =14407a(15) =14767a(16) =15667a(17) =16057a(18) =19417a(19) =21487a(20) =31177a(21) =38317a(22) =43777a(23) =52567a(24) =57637a(25) =58897a(26) =65167a(27) =65827a(28) =67477a(29) =67927