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 A000783 #4 May 16 2003 03:00:00 %S A000783 4,341,91,15,124,35,25,9,28,33,15,65,21,15,341,51,45,25,45,21,55,69, %T A000783 33,25,28,27,65,87,35,49,49,33,85,35,51,91,45,39,95,91,105,205,77,45, %U A000783 76,133,65,49,66,51,65,85,65 %N A000783 Erroneous version of A007535. %D A000783 A. H. Beiler, Recreations in the Theory of Numbers, Dover, NY, 1964, p. 42. %K A000783 dead %O A000783 1,1