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 A124683 #5 Jan 15 2014 21:21:06 %S A124683 0,1,4,9,64,81,841,961 %N A124683 Squares with strictly decreasing digits. %Y A124683 Cf. A122683 = squares with increasing digits. Subsequence of A028822 = squares with digits in descending order. %K A124683 base,fini,full,nonn %O A124683 1,3 %A A124683 _Tanya Khovanova_, Dec 24 2006 %E A124683 0 inserted by _Jon E. Schoenfield_, Jan 15 2014