Numbers k such that 2^k == 8 (mod k).

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =8a(5) =9a(6) =15a(7) =21a(8) =33a(9) =39a(10) =51a(11) =57a(12) =63a(13) =69a(14) =87a(15) =93a(16) =111a(17) =123a(18) =129a(19) =141a(20) =159a(21) =177a(22) =183a(23) =195a(24) =201a(25) =213a(26) =219a(27) =237a(28) =248a(29) =249