Numbers X such that X^2 + Y^2 = 2^(2*k) + 1 and X > Y > 0 and k is the binary digit length of X-1.

Terms

a(0) =2a(1) =4a(2) =7a(3) =8a(4) =16a(5) =25a(6) =31a(7) =32a(8) =56a(9) =64a(10) =92a(11) =103a(12) =127a(13) =128a(14) =256a(15) =409a(16) =424a(17) =428a(18) =473a(19) =484a(20) =496a(21) =511a(22) =512a(23) =904a(24) =1024a(25) =1639a(26) =1676a(27) =2047a(28) =2048a(29) =3041