%I
%S 0,1,2,3,7,7,7,7,11,11,11,11,15,15,15,15,31,31,31,31,31,31,31,31,31,
%T 31,31,31,31,31,31,31,47,47,47,47,47,47,47,47,47,47,47,47,47,47,47,47,
%U 63,63,63,63,63,63,63,63,63,63,63,63,63,63,63,63,127,127,127,127,127,127
%N a(n) = 0+1+2+...+n in lunar arithmetic in base 4 written in base 10.
%H D. Applegate, M. LeBrun and N. J. A. Sloane, <a href="http://arxiv.org/abs/1107.1130">Dismal Arithmetic</a> [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic"  the old name was too depressing]
%H <a href="/index/Di#dismal">Index entries for sequences related to dismal (or lunar) arithmetic</a>
%K nonn,base
%O 0,3
%A _N. J. A. Sloane_, Oct 02 2010
