Odd composites (including 1 in the count) where the number 3 mod 4 equals the number 1 mod 4.

Terms

a(0) =26835a(1) =26851a(2) =26855a(3) =26859a(4) =26867a(5) =26871a(6) =26875a(7) =26883a(8) =26887a(9) =26895a(10) =26899a(11) =26923a(12) =616771a(13) =616775a(14) =616779a(15) =616795a(16) =616831a(17) =616835a(18) =616839a(19) =616847a(20) =616851a(21) =616855a(22) =616859a(23) =616863a(24) =616867a(25) =616875a(26) =616879a(27) =616883a(28) =616887a(29) =616891