Search: id:A138808
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%I A138808
%S A138808 1,3,5,8,9,14,13,20,21,26,21,35,25,38,41,48,33,57,37,64,61,62,45,84,65,
%T A138808 74,81,96,57,109,61,112,101,98,101
%N A138808 Number of integer pairs <x,y>, x>0, y>0, s.t. x<=p, y<=p for any factorization 
               n=p*q.
%C A138808 Conjecture: the row sums of the plane partitions A010766 are upper bounds. 
               [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 06 2008]
%e A138808 a(8)=these 20 marked *'s:
%e A138808 -|12345678
%e A138808 -+--------
%e A138808 1|********
%e A138808 2|****
%e A138808 3|**
%e A138808 4|**
%e A138808 5|*
%e A138808 6|*
%e A138808 7|*
%e A138808 8|*
%Y A138808 Sequence in context: A002159 A050094 A137319 this_sequence A018804 A032682 
               A022769
%Y A138808 Adjacent sequences: A138805 A138806 A138807 this_sequence A138809 A138810 
               A138811
%K A138808 nonn
%O A138808 1,2
%A A138808 Jonas Wallgren (jonwa(AT)ida.liu.se), May 16 2008

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