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 A067654 #16 Feb 02 2019 14:14:04
%S A067654 2,4,22,38,314,1504,16346,24796,331906,2426404,38445118,163944598,
%T A067654 2993870654,2647864592,601353085846,820420721222,18874008233858,
%U A067654 20741357283932,5782164084903302,38314394323494974,1059898973520975218
%N A067654 Numerators of the coefficients in power series expansion of exp(2x/(1-x)).
%D A067654 K. Knopp, Theory and application of infinite series, Dover, p. 547.
%D A067654 O. Perron, Über das infinitäre Verhalten der Koeffizienten einer gewissen Potenzreihe, Archiv d. Math. u. Phys. (3), Vol. 22, pp. 329-340, 1914.
%F A067654 a(n) is the numerator of Sum_{i=1..n} binomial(n-1, i-1)*2^i/i!.
%Y A067654 Cf. A067655.
%K A067654 nonn,frac
%O A067654 1,1
%A A067654 _Benoit Cloitre_, Feb 03 2002