Initial prime in set of 4 consecutive primes with common difference 12.

Terms

a(0) =111497a(1) =258527a(2) =286777a(3) =318407a(4) =332767a(5) =341827a(6) =358447a(7) =439787a(8) =473887a(9) =480737a(10) =495377a(11) =634187a(12) =647417a(13) =658367a(14) =663857a(15) =703837a(16) =732497a(17) =816317a(18) =819787a(19) =827767a(20) =843067a(21) =862307a(22) =937777a(23) =970457a(24) =970537a(25) =1001267a(26) =1012147a(27) =1032727a(28) =1052707a(29) =1055827