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 A047782 N1623 #9 Jul 27 2015 20:49:31 %S A047782 1,5,25,149,1081,9366,94586,1091670,14174522,204495125 %N A047782 Erroneous version of A002050. %D A047782 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %H A047782 G. J. Simmons, <a href="http://www.jstor.org/stable/2689153">A combinatorial problem associated with a family of combination locks</a>, Math. Mag., 37 (1964), 127-132 (but there are errors). %H A047782 G. J. Simmons, <a href="/A002050/a002050.pdf">A combinatorial problem associated with a family of combination locks</a>, Math. Mag., 37 (1964), 127-132 [Annotated, corrected, scanned copy] %K A047782 dead %O A047782 0,2 %A A047782 _N. J. A. Sloane_, Jul 27 2015