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 A025688 #7 Jul 06 2025 12:53:14 %S A025688 0,0,1,0,1,2,0,1,2,3,0,1,2,3,0,4,1,2,3,0,4,1,5,2,3,0,4,1,5,2,6,3,0,4, %T A025688 1,5,2,6,3,7,0,4,1,5,2,6,3,7,0,4,8,1,5,2,6,3,7,0,4,8,1,5,9,2,6,3,7,0, %U A025688 4,8,1,5,9,2,6,10,3,7,0,4,8,1,5,9,2,6,10,3,7,0,11,4,8,1,5,9,2,6,10,3,7,0,11,4,8 %N A025688 Exponent of 10 (value of j) in n-th number of form 6^i*10^j. %Y A025688 Cf. A025629. %K A025688 nonn %O A025688 1,6 %A A025688 _David W. Wilson_