Primes p such that three (the maximum number) primes occur between p and p+12.

Terms

a(0) =5a(1) =7a(2) =11a(3) =97a(4) =101a(5) =1481a(6) =1867a(7) =3457a(8) =5647a(9) =15727a(10) =16057a(11) =16061a(12) =19417a(13) =19421a(14) =21011a(15) =22271a(16) =43777a(17) =43781a(18) =55331a(19) =79687a(20) =88807a(21) =101107a(22) =144161a(23) =165701a(24) =166841a(25) =195731a(26) =201821a(27) =225341a(28) =247601a(29) =257857