Numerators of continued fraction convergents to sqrt(645).

Terms

a(0) =25a(1) =51a(2) =76a(3) =127a(4) =1600a(5) =16127a(6) =195124a(7) =211251a(8) =406375a(9) =1024001a(10) =51606425a(11) =104236851a(12) =155843276a(13) =260080127a(14) =3276804800a(15) =33028128127a(16) =399614342324a(17) =432642470451a(18) =832256812775