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A171786 Numbers of rank 3 in the poset of lunar numbers. 8


%S 6,17,27,37,47,57,67,70,71,72,73,74,75,76,77,107,118,128,138,148,158,

%T 168,178,180,181,182,183,184,185,186,187,188,207,217,228,238,248,258,

%U 268,278,280,281,282,283,284,285,286,287,288,307,317,327

%N Numbers of rank 3 in the poset of lunar numbers.

%H David Applegate and N. J. A. Sloane, <a href="/A171786/b171786.txt">Table of n, a(n) for n = 1..17994</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

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Last modified February 16 14:47 EST 2019. Contains 320163 sequences. (Running on oeis4.)