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 A061662 #10 Aug 25 2023 00:57:50 %S A061662 266,273,282,2058,2065,2128,2184,2256,13771,14931,16394,16401,16450, %T A061662 16464,16513,16520,16634,16674,16898,17024,17409,17472,18048,24852, %U A061662 110168,119448,122297,131082,131089,131138,131152,131201,131208,131600 %N A061662 Numbers k > 1 such that, in base 8, k and k^2 contain the same digits in the same proportion. %H A061662 Ray Chandler, <a href="/A061662/b061662.txt">Table of n, a(n) for n = 1..1000</a> %e A061662 266 = 412_8 and 266^2 = 212144_8. %Y A061662 Cf. A061656, A061657, A061658, A061659, A061660, A061661, A061663, A114258, A061664. %K A061662 base,easy,nonn %O A061662 1,1 %A A061662 _Erich Friedman_, Jun 16 2001 %E A061662 Offset changed to 1 by _Alois P. Heinz_, May 10 2015