Numerators of continued fraction convergents to sqrt(431).

Terms

a(0) =20a(1) =21a(2) =83a(3) =436a(4) =519a(5) =1474a(6) =10837a(7) =12311a(8) =244746a(9) =257057a(10) =2044145a(11) =4345347a(12) =6389492a(13) =36292807a(14) =115267913a(15) =151560720a(16) =6177696713a(17) =6329257433a(18) =25165469012a(19) =132156602493a(20) =157322071505a(21) =446800745503