A171573 - OEIS

%I #10 Aug 06 2014 16:12:50

%S 0,1,2,3,4,14,14,14,14,14,24,24,24,24,24,34,34,34,34,34,44,44,44,44,

%T 44,144,144,144,144,144,144,144,144,144,144,144,144,144,144,144,144,

%U 144,144,144,144,144,144,144,144,144,244,244,244,244,244,244,244,244,244

%N a(n) = 0+1+2+...+n in lunar arithmetic in base 5 written in base 5.

%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