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 A025697 #7 Jul 06 2025 13:49:01 %S A025697 1,2,4,6,9,13,17,22,27,33,40,47,55,63,72,82,92,103,115,127,140,153, %T A025697 167,182,197,213,229,246,264,282,301,321,341,362,383,405,428,451,475, %U A025697 499,524,550,576,603,630,658,687,716,746,777,808,840,872,905,939,973,1008,1043 %N A025697 Index of 3^n within sequence of numbers of form 3^i*6^j. %C A025697 Positions of zeros in A025657. - _R. J. Mathar_, Jul 06 2025 %K A025697 nonn %O A025697 1,2 %A A025697 _David W. Wilson_