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 A382415 #7 Mar 26 2025 21:49:01 %S A382415 0,5,10,15,20,25,26,27,28,29,30,35,40,45,50,51,52,53,54,55,60,65,70, %T A382415 75,76,77,78,79,80,85,90,95,100,101,102,103,104,105,110,115,120,125, %U A382415 126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145 %N A382415 Numbers with at least one zero in their base-5 representation. %H A382415 Paolo Xausa, <a href="/A382415/b382415.txt">Table of n, a(n) for n = 1..10000</a> %t A382415 Select[Range[0, 150], DigitCount[#, 5, 0] > 0 &] %Y A382415 Cf. analogous sequences in other bases: A062289 (base 2), A081605 (base 3), A196032 (base 4), A382416 (base 6), A382413 (base 7), A382417 (base 8), A382418 (base 9), A011540 (base 10). %Y A382415 Cf. A007091, A023721 (complement), A023722. %K A382415 nonn,base,easy %O A382415 1,2 %A A382415 _Paolo Xausa_, Mar 25 2025