Denominators of continued fraction convergents to sqrt(640).

Terms

a(0) =1a(1) =3a(2) =7a(3) =10a(4) =47a(5) =57a(6) =674a(7) =731a(8) =3598a(9) =4329a(10) =12256a(11) =41097a(12) =2067106a(13) =6242415a(14) =14551936a(15) =20794351a(16) =97729340a(17) =118523691a(18) =1401489941a(19) =1520013632a(20) =7481544469a(21) =9001558101a(22) =25484660671a(23) =85455540114