Denominators of continued fraction convergents to sqrt(641).

Terms

a(0) =1a(1) =3a(2) =19a(3) =22a(4) =217a(5) =673a(6) =890a(7) =3343a(8) =4233a(9) =24508a(10) =28741a(11) =53249a(12) =294986a(13) =348235a(14) =1339691a(15) =1687926a(16) =6403469a(17) =59319147a(18) =65722616a(19) =453654843a(20) =1426687145a(21) =71788012093a(22) =216790723424