Odd numbers k such that neither k nor k + 2 is a power of a prime.

Terms

a(0) =33a(1) =55a(2) =63a(3) =75a(4) =85a(5) =91a(6) =93a(7) =115a(8) =117a(9) =133a(10) =141a(11) =143a(12) =145a(13) =153a(14) =159a(15) =175a(16) =183a(17) =185a(18) =187a(19) =201a(20) =203a(21) =205a(22) =207a(23) =213a(24) =215a(25) =217a(26) =219a(27) =235a(28) =245a(29) =247