Search: id:A140928
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%I A140928
%S A140928 1,3003,2186184,644195552,98561919456,9095857138368,559611782036736,
%T A140928 24648355308799872,819557814017595744,21427584214357481888,
%U A140928 454924095627897307776,8048657076493567752960,121208942878147181041600,
               1581318351414483181236000
%N A140928 Number of 5 X 10 matrices with elements in 0..n with each row and each 
               column in nondecreasing order. 5,10,n can be permuted, see formula.
%F A140928 (empirical) set p,q,r to n,10,5 (in any order) in s=p+q+r-1; a(n) = product 
               {i in 0..r-1} (binomial(s,p+i)*i!/(s-i)^(r-i-1))
%Y A140928 Sequence in context: A094336 A100896 A140915 this_sequence A090162 A031818 
               A152207
%Y A140928 Adjacent sequences: A140925 A140926 A140927 this_sequence A140929 A140930 
               A140931
%K A140928 nonn
%O A140928 0,2
%A A140928 Ron Hardin rhh(at)cadence.com, Jul 05 2008

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