Numerators of continued fraction convergents to sqrt(5).

Terms

a(0) =1a(1) =2a(2) =9a(3) =38a(4) =161a(5) =682a(6) =2889a(7) =12238a(8) =51841a(9) =219602a(10) =930249a(11) =3940598a(12) =16692641a(13) =70711162a(14) =299537289a(15) =1268860318a(16) =5374978561a(17) =22768774562a(18) =96450076809a(19) =408569081798