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Numbers n such that the lunar product of the distinct lunar prime divisors of n is <= n.
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%I #19 Aug 06 2014 17:14:12

%S 9,19,29,39,49,59,69,79,89,90,91,92,93,94,95,96,97,98,99,100,109,112,

%T 113,114,115,116,117,118,119,129,139,149,159,169,179,189,190,191,192,

%U 193,194,195,196,197,198,199,200,209,211,219,223,224,225

%N Numbers n such that the lunar product of the distinct lunar prime divisors of n is <= n.

%H D. Applegate, <a href="/A087061/a087061.txt">C program for lunar arithmetic and number theory</a> [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing]

%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

%O 1,1

%A _David Applegate_, Nov 11 2003