Numbers k for which 16*k+1, 16*k+3, 16*k+7, 16*k+13 and 16*k+15 are primes.

Terms

a(0) =1a(1) =7771a(2) =18166a(3) =21691a(4) =26146a(5) =26356a(6) =46801a(7) =69046a(8) =75916a(9) =91516a(10) =111406a(11) =122716a(12) =156196a(13) =171436a(14) =175726a(15) =177316a(16) =201571a(17) =219316a(18) =222706a(19) =259951a(20) =282826a(21) =355531a(22) =426796a(23) =433621a(24) =435301a(25) =438976a(26) =440056a(27) =524371a(28) =560461a(29) =585166