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 A025668 #7 Jul 06 2025 14:05:36 %S A025668 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 A025668 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 A025668 2,3,4,5,6,7,8,9,10,11,0,1,2,3,4,5,6,7,8,9,10,11,0,12,1,2,3,4,5,6,7,8,9,10,11 %N A025668 Exponent of 7 (value of j) in n-th number of form 6^i*7^j. %Y A025668 Cf. A025626. %K A025668 nonn %O A025668 1,6 %A A025668 _David W. Wilson_