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 A074091 #3 Mar 30 2012 16:49:30 %S A074091 4,3,5,4,0,5,3,4,5,0,4,9,2,8,0,1,1,1,1,0,7,7,4,2,0,14,2,5,7,0,4,2,9, %T A074091 10,0,5,8,10,2,0,1,1,1,1,0,7,2,4,17,0,2,5,2,6,0,3,17,4,6,0,2,3,6,11,0, %U A074091 1,1,1,1,0,11,7,2,12,0,12,6,5,3,0,2,9,3,4,0,8,2,3,6,0,1,1,1,1,0,2,6,3,3,0,10 %N A074091 Number of steps to reach an integer starting with s = n/5 and iterating the map x -> s*ceiling(x). %Y A074091 Cf. A072340, A074078. %K A074091 nonn %O A074091 6,1 %A A074091 _N. J. A. Sloane_, Sep 16 2002