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 A025727 #7 Jul 06 2025 14:15:41 %S A025727 1,2,4,7,11,16,22,28,35,43,52,62,73,84,96,109,123,138,154,171,188,206, %T A025727 225,245,266,288,310,333,357,382,408,435,463,491,520,550,581,613,646, %U A025727 679,713,748,784,821,859,898,937,977,1018,1060,1103,1147,1191,1236,1282,1329 %N A025727 Index of 7^n within sequence of numbers of form 7^i*10^j. %C A025727 Positions of zeros in A025689. - _R. J. Mathar_, Jul 06 2025 %K A025727 nonn %O A025727 1,2 %A A025727 _David W. Wilson_