Numbers n such that (n-1)^2+1 divides 2^(n-1)-1.

A260407

Numbers n such that (n-1)^2+1 divides 2^(n-1)-1.

Terms

    a(0) =1a(1) =17a(2) =257a(3) =8209a(4) =65537a(5) =649801a(6) =1382401a(7) =4294967297

External references