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 A059628 #5 Oct 04 2012 10:28:40 %S A059628 0,5,0,5,0,5,0,5,0,5,50,55,50,55,50,55,50,55,50,55,0,5,0,5,0,5,0,5,0, %T A059628 5,50,55,50,55,50,55,50,55,50,55,0,5,0,5,0,5,0,5,0,5,50,55,50,55,50, %U A059628 55,50,55,50,55,0,5,0,5,0,5,0,5,0,5,50,55,50,55,50,55,50,55,50,55,0,5,0,5 %N A059628 Carryless multiplication 5 X n base 10. %H A059628 David Applegate, Marc LeBrun and N. J. A. Sloane, <a href="http://neilsloane.com/doc/carry1.pdf">Carryless Arithmetic (I): The Mod 10 Version</a>. %Y A059628 Cf. A001477 for carryless 1 X n, A004520 for carryless 2 X 10 base 10, A008592 for carryless 10 X n. %K A059628 base,nonn %O A059628 0,2 %A A059628 _Henry Bottomley_, Feb 19 2001