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 A006259 M0584 #22 Jul 08 2025 16:44:35 %S A006259 1,1,1,2,3,4,7,11,18,25,32,39,71,110,181,252,323,394,465,536,1001, %T A006259 1537,2538,3539,4540,5541,6542,7543,8544,9545,18089,27634,45723,63812, %U A006259 81901,99990,118079,136168,154257,172346,190435,208524,398959,607483 %N A006259 Denominators of approximations to e. %D A006259 R. L. Graham, D. E. Knuth and O. Patashnik, Concrete Mathematics. Addison-Wesley, Reading, MA, 1990, p. 122. %D A006259 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %e A006259 A006258/A006259 = 1, 2, 3, 5/2, 8/3, 11/4, 19/7, 30/11, 49/18, 68/25, 87/32, 106/39, 193/71, 299/110, 492/181, ... . %Y A006259 Cf. A006258 (numerators). For another version see A119015. %Y A006259 Cf. A001113. %K A006259 nonn,frac %O A006259 1,4 %A A006259 _N. J. A. Sloane_ %E A006259 More terms from _Joshua Zucker_, May 08 2006 %E A006259 Two terms removed by _Alois P. Heinz_, Nov 14 2021