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 A169907 #9 Oct 04 2012 10:29:13 %S A169907 42,46,40,44,48,82,86,80,84,88,2,4,6,8,2,4,6,8,22,26,20,24,28,62,66, %T A169907 60,64,68,402,408,444,448,482,486,422,426,464,468,806,804,842,844,886, %U A169907 888,826,828,862,864,2,6,4,8,206,204,246,248,282,284,222,224,266,268,602,608 %N A169907 Carryless product 2*A169887(n). %H A169907 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> %H A169907 <a href="/index/Ca#CARRYLESS">Index entries for sequences related to carryless arithmetic</a> %Y A169907 Cf. A169887, A169906. %K A169907 nonn,base %O A169907 1,1 %A A169907 _David Applegate_, _Marc LeBrun_ and _N. J. A. Sloane_, Jul 11 2010