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 A137002 #10 Apr 16 2024 13:56:06 %S A137002 1,5,11,15 %N A137002 Numbers k such that k and k^2 use only the digits 1, 2 and 5. %C A137002 Sequence terminates. %C A137002 Generated with DrScheme. %C A137002 Numbers appearing in A131082; subsequence of A031153, A137003. - _M. F. Hasler_, Jan 24 2008 %H A137002 Jonathan Wellons, <a href="https://web.archive.org/web/20090206165028/http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a> [archived] %e A137002 15^2 = 225. %Y A137002 Cf. A031153, A131082, A136986, A137003. %K A137002 base,fini,full,nonn %O A137002 1,2 %A A137002 Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008