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 A077488 #5 Dec 05 2013 19:55:52 %S A077488 11,111,1111,1221,11111,12221,111111,122221,123321,1111111,1222221, %T A077488 1233321,11111111,12222221,12333321,12344321,111111111,122222221, %U A077488 123333321,123444321,1111111111,1222222221,1233333321,1234444321 %N A077488 All possible products in increasing order of two distinct members of the unary sequence 1, 11, 111, 1111, 11111, ...given by A000042. %Y A077488 Cf. A000042. %K A077488 base,nonn %O A077488 1,1 %A A077488 _Amarnath Murthy_, Nov 07 2002 %E A077488 Corrected and extended by _Ray Chandler_, Aug 03 2003