This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A078982 #17 Aug 05 2024 12:45:32 %S A078982 1,1,2,11,35,116,267,383,8310,8693,17003,25696,119787,265270,385057, %T A078982 18748006,1331493483,9339202387,10670695870,20009898257,190759780183, %U A078982 210769678440,612299137063,823068815503,9666056107596,10489124923099 %N A078982 Denominators of continued fraction convergents to cosh(1). %H A078982 Vincenzo Librandi, <a href="/A078982/b078982.txt">Table of n, a(n) for n = 0..199</a> %t A078982 Denominator[Convergents[Cosh[1],30]] (* _Harvey P. Dale_, Jul 22 2014 *) %o A078982 (PARI) a(n)=component(component(contfracpnqn(contfrac(cosh(1),n+1)),1),2) %Y A078982 Cf. A068118 (continued fraction), A073743 (decimal expansion), A078983 (numerators). %K A078982 frac,nonn %O A078982 0,3 %A A078982 _Benoit Cloitre_, Dec 20 2002 %E A078982 Offset changed by _Andrew Howroyd_, Aug 05 2024