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 A025740 #10 Jul 06 2025 13:43:06 %S A025740 1,5,12,22,36,53,73,97,124,154,188,225,265,309,356,406,460,517,577, %T A025740 641,708,778,852,929,1009,1093,1180,1270,1364,1461,1561,1664,1771, %U A025740 1881,1994,2111,2231,2354,2481,2611,2744,2881,3021,3164,3311,3461,3614,3771,3931 %N A025740 Index of 10^n within sequence of numbers of form 2^i*10^j. %C A025740 Positions of zeros in A025639. - _R. J. Mathar_, Jul 06 2025 %Y A025740 Partial sums of A123384. %K A025740 nonn %O A025740 1,2 %A A025740 _David W. Wilson_