A078982 Denominators of continued fraction convergents to cosh(1).

1, 1, 2, 11, 35, 116, 267, 383, 8310, 8693, 17003, 25696, 119787, 265270, 385057, 18748006, 1331493483, 9339202387, 10670695870, 20009898257, 190759780183, 210769678440, 612299137063, 823068815503, 9666056107596, 10489124923099

Offset: 0

Author

Benoit Cloitre, Dec 20 2002

Keywords

• frac
• nonn

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..199

Crossrefs

Cf. A068118 (continued fraction), A073743 (decimal expansion), A078983 (numerators).

Programs

Mathematica

Denominator[Convergents[Cosh[1],30]] (* Harvey P. Dale, Jul 22 2014 *)

PARI

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

Extensions

Offset changed by Andrew Howroyd, Aug 05 2024