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%I #13 Mar 02 2017 23:07:56
%S 0,1,3,6,0,5,1,8,6,5,15,26,38,41,55,60,76,83,91,0,20,41,63,86,0,25,41,
%T 68,86,5,35,66,98,21,55,80,16,43,71,0,40,81,23,66,0,45,81,28,66,5,55,
%U 6,58,1,55,0,56,3,51,0,60,21,83,46,0,65,21,88,46,5,75,46,18,81,55,20,96,63,31
%N Carryless sum 1+2+3+...+n.
%C Carryless analog of triangular numbers.
%H Rémy Sigrist, <a href="/A169890/b169890.txt">Table of n, a(n) for n = 0..9999</a>
%H 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 <a href="/index/Ca#CARRYLESS">Index entries for sequences related to carryless arithmetic</a>
%Y Cf. A004250, A059729.
%K nonn,base,look
%O 0,3
%A _David Applegate_, _Marc LeBrun_ and _N. J. A. Sloane_, Jul 06 2010
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