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 A259104 #5 Aug 15 2015 11:57:58 %S A259104 4,14,60,310,1892,13374,107644,972710,9754500,107518702,1292197244, %T A259104 16818292374,235673103460,3537700674590,56637064388412, %U A259104 963304044932614,17346582063731204,329698807289999310,6595909863144795580,138548914038247276022,3048737440173364880484 %N A259104 A000522(n+2)-A000522(n). %H A259104 J. L. Adams, <a href="/A000522/a000522_1.pdf">Conceptual Blockbusting: A Guide to Better Ideas</a>, Freeman, San Francisco, 1974. [Annotated scans of pages 69 and 70 only] %Y A259104 Cf. A000522, A001339. %K A259104 nonn %O A259104 0,1 %A A259104 _N. J. A. Sloane_, Jun 23 2015