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Numbers of rank 7 in the poset of lunar numbers.
8

%I #13 Aug 06 2014 16:14:23

%S 2,13,23,30,31,32,33,103,114,124,134,140,141,142,143,144,203,213,224,

%T 234,240,241,242,243,244,301,302,303,312,313,323,334,340,341,342,343,

%U 344,400,410,411,420,421,422,430,431,432,433,440,441,442

%N Numbers of rank 7 in the poset of lunar numbers.

%H David Applegate and N. J. A. Sloane, <a href="/A171794/b171794.txt">Table of n, a(n) for n = 1..2725</a>

%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 1,1

%A _David Applegate_ and _N. J. A. Sloane_, Oct 14 2010