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 A025682 #7 Jul 06 2025 08:53:56 %S A025682 0,0,1,0,1,2,0,1,2,3,0,1,2,3,4,0,1,2,3,4,5,0,1,2,3,4,5,6,0,1,2,3,4,5, %T A025682 6,7,0,1,2,3,4,5,6,7,8,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,10,0,1, %U A025682 2,3,4,5,6,7,8,9,10,11,0,1,2,3,4,5,6,7,8,9,10,11,12,0,1,2,3,4,5,6,7,8,9,10,11 %N A025682 Exponent of 9 (value of j) in n-th number of form 8^i*9^j. %Y A025682 Cf. A025633. Differs from A002262 at a(190). %K A025682 nonn %O A025682 1,6 %A A025682 _David W. Wilson_