Numbers n such that n = 4*(2*i+1)+1 and 2^(n-2) == 1 (mod (2*i+1)).

Terms

a(0) =5a(1) =29a(2) =2045a(3) =40133a(4) =971837a(5) =5063357a(6) =7354397a(7) =16554917a(8) =17786525a(9) =42244637a(10) =52717277a(11) =79704029a(12) =84896957a(13) =153424637a(14) =262984997a(15) =288644957a(16) =328721213a(17) =350252957a(18) =353294757a(19) =393411197a(20) =498253253a(21) =613578149a(22) =634102757a(23) =876046277