A078981 Denominators of continued fraction convergents to sinh(1).

1, 5, 6, 17, 40, 97, 137, 371, 2734, 14041, 16775, 30816, 47591, 125998, 299587, 5818151, 6117738, 18053627, 24171365, 187253182, 211424547, 398677729, 3799524108, 4198201837, 16394129619, 20592331456, 36986461075, 94565253606

Offset: 0

Author

Benoit Cloitre, Dec 20 2002

Keywords

• frac
• nonn

Crossrefs

Cf. A068139 (continued fraction), A073742 (decimal expansion), A078980 (numerators).

Programs

Mathematica

Convergents[Sinh[1],30]//Denominator (* Harvey P. Dale, Apr 17 2022 *)

PARI

a(n)=component(component(contfracpnqn(contfrac(sinh(1),n+1)),1),2)

Extensions

Offset changed by Andrew Howroyd, Aug 05 2024