Smallest prime factor of 2^(8n) + 1.

Terms

a(0) =257a(1) =65537a(2) =97a(3) =641a(4) =257a(5) =193a(6) =257a(7) =274177a(8) =97a(9) =65537a(10) =257a(11) =641a(12) =257a(13) =449a(14) =97a(16) =257a(17) =193a(18) =257a(19) =641a(20) =97a(21) =65537a(22) =257a(23) =769a(24) =257a(25) =65537a(26) =97a(27) =641a(28) =257a(29) =193a(30) =257