Search: id:A112781
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%I A112781
%S A112781 4,9,15,20,29,38,47,56,66,76,86,95,106,117,125,135,146,156,167,177,186,
%T A112781 196,209,219,231,241,254,267,280,292,305,316,330,343,356,368,381,396,
%U A112781 409,423,436,450,463,476,491,503,517,530,547,561,577,593,608,625,640
%N A112781 Number of highly composite numbers (definition 1, A002182) < 10^n.
%H A112781 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               HighlyCompositeNumber.html">Highly Composite Number</a>
%H A112781 A. Flammenkamp, <a href="http://wwwhomes.uni-bielefeld.de/achim/highly.txt">
               First 1200 highly composite numbers</a>
%F A112781 Partial sums of A112780. - Lekraj Beedassy (blekraj(AT)yahoo.com), Sep 
               02 2006
%e A112781 a(1) = 4 since there are four highly composite numbers < 10^1 {1,2,4,
               6}.
%Y A112781 Cf. A002182, A002183, A108602, A112778, A112779, A112780.
%Y A112781 Sequence in context: A122499 A143709 A010446 this_sequence A166131 A122927 
               A078505
%Y A112781 Adjacent sequences: A112778 A112779 A112780 this_sequence A112782 A112783 
               A112784
%K A112781 nonn
%O A112781 1,1
%A A112781 Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 11 2005

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