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 A076867 #6 May 31 2019 09:44:42 %S A076867 1,4,12,41,131,458,1574,5664,20766,78647,306438,1233636,5127670, %T A076867 22036940,97905965,449634928,2133165981,10445593354,52735714850, %U A076867 274162571129,1465821995582,8049360711049,45342104688820,261687650813517 %N A076867 Euler transform of 1, 3, 8, 23, ... (A050535). %H A076867 N. J. A. Sloane, <a href="/transforms.txt">Transforms</a> %Y A076867 Cf. A050535, A076865-A076866. %K A076867 nonn %O A076867 1,2 %A A076867 _N. J. A. Sloane_, Nov 23 2002 %E A076867 More terms from _Vaclav Kotesovec_, May 31 2019