Denominators of continued fraction convergents to sqrt(646).

Terms

a(0) =1a(1) =2a(2) =5a(3) =12a(4) =605a(5) =1222a(6) =3049a(7) =7320a(8) =369049a(9) =745418a(10) =1859885a(11) =4465188a(12) =225119285a(13) =454703758a(14) =1134526801a(15) =2723757360a(16) =137322394801a(17) =277368546962a(18) =692059488725