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 A043445 #28 Nov 28 2024 11:10:43 %S A043445 6,14,22,30,38,46,48,49,50,51,52,53,55,62,70,78,86,94,102,110,112,113, %T A043445 114,115,116,117,119,126,134,142,150,158,166,174,176,177,178,179,180, %U A043445 181,183,190,198,206,214,222,230,238,240,241,242,243,244,245,247,254,262 %N A043445 Numbers having exactly one 6 in base 8. %H A043445 Paolo Xausa, <a href="/A043445/b043445.txt">Table of n, a(n) for n = 1..10000</a> (corrected original data from Robert Israel) %p A043445 filter:= proc(n) numboccur(6,convert(n,base,8)) = 1 end proc: %p A043445 select(filter, [$1..1000]); # _Robert Israel_, Nov 27 2024 %t A043445 Select[Range[500], DigitCount[#, 8, 6] == 1 &] (* _Paolo Xausa_, Nov 26 2024 *) %Y A043445 Cf. A007094, A043417, A043477, A043513. %K A043445 nonn,easy,base %O A043445 1,1 %A A043445 _Clark Kimberling_