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 A025657 #16 Jul 06 2025 10:21:16 %S A025657 0,0,1,0,1,0,2,1,0,2,1,3,0,2,1,3,0,2,4,1,3,0,2,4,1,3,0,5,2,4,1,3,0,5, %T A025657 2,4,1,6,3,0,5,2,4,1,6,3,0,5,2,7,4,1,6,3,0,5,2,7,4,1,6,3,0,8,5,2,7,4, %U A025657 1,6,3,0,8,5,2,7,4,1,9,6,3,0,8,5,2,7,4,1,9,6,3,0,8,5,2,10,7,4,1,9,6,3,0,8,5,2,10 %N A025657 Exponent of 6 (value of j) in n-th number of form 3^i*6^j. %C A025657 Differs from A025686 at a(114). A025641 is the exponent of 3 (value of i). %Y A025657 Cf. A025614, A025641 (exponent of 3). %K A025657 nonn %O A025657 1,7 %A A025657 _David W. Wilson_