Composite numbers k such that k == +-1 (mod 8) and 2^((k-1)/2) == 1 (mod k).

Terms

a(0) =561a(1) =1105a(2) =1729a(3) =1905a(4) =2047a(5) =2465a(6) =4033a(7) =4681a(8) =6601a(9) =8321a(10) =8481a(11) =10585a(12) =12801a(13) =15841a(14) =16705a(15) =18705a(16) =25761a(17) =30121a(18) =33153a(19) =34945a(20) =41041a(21) =42799a(22) =46657a(23) =52633a(24) =62745a(25) =65281a(26) =74665a(27) =75361a(28) =85489a(29) =87249