Numerators of continued fraction convergents to sqrt(681).

Terms

a(0) =26a(1) =261a(2) =548a(3) =1357a(4) =1905a(5) =3262a(6) =8429a(7) =53836a(8) =385281a(9) =1209679a(10) =2804639a(11) =4014318a(12) =67033727a(13) =71048045a(14) =209129817a(15) =698437496a(16) =5098192289a(17) =31287591230a(18) =67673374749a(19) =98960965979a(20) =166634340728a(21) =432229647435