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 A025676 #7 Jul 06 2025 10:21:34 %S A025676 0,1,0,2,1,0,3,2,1,0,4,3,2,1,0,5,4,3,2,1,0,6,5,4,3,2,1,0,7,6,5,4,3,2, %T A025676 1,0,8,7,6,5,4,3,2,1,0,9,8,7,6,5,4,3,2,1,0,10,9,8,7,6,5,4,3,2,1,0,11, %U A025676 10,9,8,7,6,5,4,3,2,1,0,12,11,10,9,8,7,6,5,4,3,2,1,0,13,12,11,10,9,8,7,6,5,4,3 %N A025676 Exponent of 8 (value of i) in n-th number of form 8^i*9^j. %Y A025676 Cf. A025633, A025682. Differs from A025581 at a(190). %K A025676 nonn %O A025676 1,4 %A A025676 _David W. Wilson_