login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Take unbounded lunar divisors of n as defined in A087029, add them using normal addition. See A087416 for their lunar sum.
4

%I #17 Aug 06 2014 17:14:12

%S 45,44,42,39,35,30,24,17,9,495,4500,168,154,138,120,100,78,54,28,484,

%T 492,3916,224,198,170,140,108,74,38,462,469,476,3276,258,220,180,138,

%U 94,48,429,435,441,447,2613,270,220,168,114,58,385,390,395

%N Take unbounded lunar divisors of n as defined in A087029, add them using normal addition. See A087416 for their lunar sum.

%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,easy

%O 1,1

%A Marc LeBrun and _N. J. A. Sloane_, Oct 19 2003

%E More terms from _David Applegate_, Nov 07 2003