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 A023073 #10 Aug 07 2025 03:04:22
%S A023073 25,250,275,1042,1204,1463,2041,2104,2500,2525,2750,2775,3146,3567,
%T A023073 3657,10042,10204,10402,10420,10742,12004,12040,12074,12245,12452,
%U A023073 14063,14306,14603,14630,14637,14736,14763,16043,16304,16347,17346,17463,20041,20104
%N A023073 Positive numbers k such that k and 2*k are anagrams in base 8 (written in base 8).
%H A023073 Amiram Eldar, <a href="/A023073/b023073.txt">Table of n, a(n) for n = 1..10000</a>
%t A023073 FromDigits[IntegerDigits[#, 8]] & /@ Select[Range[30000], SameQ @@ Sort /@ IntegerDigits[{#, 2*#}, 8] &] (* _Amiram Eldar_, Aug 07 2025 *)
%Y A023073 Cf. A007094.
%K A023073 nonn,base
%O A023073 1,1
%A A023073 _David W. Wilson_