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 A259690 #7 Aug 04 2015 13:20:05 %S A259690 1,1,3,10,38,154,645,2853,12844,58985 %N A259690 Erroneous version of A001002. %H A259690 I. M. H. Etherington, <a href="/A000108/a000108_14.pdf">Some problems of non-associative combinations (I)</a>, Edinburgh Math. Notes, 32 (1940), pp. i-vi. [Annotated scanned copy]. Part II [not scanned] is by A. Erdelyi and I. M. H. Etherington, and is on pages vii-xiv of the same issue. %K A259690 dead %O A259690 0,3