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 A025713 #7 Jul 06 2025 14:03:19 %S A025713 1,3,7,12,19,28,38,50,64,79,96,114,134,156,179,204,231,259,289,320, %T A025713 353,388,424,462,502,543,586,631,677,725,774,825,878,932,988,1046, %U A025713 1105,1166,1228,1292,1358,1425,1494,1565,1637,1711,1787,1864,1943,2023,2105,2189 %N A025713 Index of 6^n within sequence of numbers of form 3^i*6^j. %C A025713 Positions of zeros in A025641. - _R. J. Mathar_, Jul 06 2025 %K A025713 nonn %O A025713 1,2 %A A025713 _David W. Wilson_