a(n) = 2^(4n - 2) + 1.

A207262

a(n) = 2^(4n - 2) + 1.

Terms

    a(0) =5a(1) =65a(2) =1025a(3) =16385a(4) =262145a(5) =4194305a(6) =67108865a(7) =1073741825a(8) =17179869185a(9) =274877906945

External references