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 A151828 #4 Nov 08 2016 02:59:43 %S A151828 1,2,8,32,139,618,2779,12528,56404,253152,1131849,5040412,22359981, %T A151828 98837102 %N A151828 Number of hv-convex sets from class S having semiperimeter n of the bounding rectangle. %D A151828 Peter Balazs, Generation and Empirical Investigation of hv-Convex Discrete Sets, in Image Analysis, Lecture Notes in Computer Science, Volume 4522/2007, Springer-Verlag. %Y A151828 Cf. A005436, A151829. %K A151828 nonn %O A151828 2,2 %A A151828 _N. J. A. Sloane_, Jul 12 2009