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 A066217 #5 Mar 31 2012 10:26:36 %S A066217 25,36,125,375,625,3125,5775,5776,15625,27375,51375,59264,116955, %T A066217 137048,141376,228177,230775,237632,365625,387516,390625,495248, %U A066217 658125,1662656,2387616,2727375,3515625,3761368,4265625,4865625,5559375,6696216 %N A066217 Numbers not ending in 0 which are the product of two substrings of themselves. The substrings may be equal, but each must be greater than 1. %e A066217 5775 is in the list since 5775 = 77 * 75 %K A066217 base,nonn %O A066217 1,1 %A A066217 _Erich Friedman_, Dec 17 2001 %E A066217 More terms from _Sean A. Irvine_, May 20 2010