Smallest prime factor of 2^A219547(n) + 1.

Terms

a(0) =257a(1) =65537a(2) =641a(3) =257a(4) =193a(5) =257a(6) =274177a(7) =65537a(8) =257a(9) =641a(10) =257a(11) =449a(13) =257a(14) =257a(15) =641a(16) =65537a(17) =257a(18) =769a(19) =257a(20) =65537a(21) =641a(22) =257a(23) =193a(24) =257a(26) =5441a(27) =257a(28) =257a(29) =65537a(30) =274177a(31) =257