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0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 3, 1, 0, 0, 0, 9, 4, 1, 0, 0, 0, 22, 14, 5, 1, 0, 0, 0, 51, 42, 20, 6, 1, 0, 0, 0, 111, 120, 69, 27, 7, 1, 0, 0, 0, 233, 335, 224, 104, 35, 8, 1, 0, 0, 0, 474, 940, 707, 372, 148, 44, 9, 1, 0, 0, 0, 942, 2695, 2221, 1281, 574, 202, 54, 10, 1, 0, 0, 0, 1836, 7980, 7038, 4343, 2122, 841, 267, 65, 11, 1, 0, 0, 0
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,11
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LINKS
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FORMULA
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R(n,k,m)=k*sum(i=0..n-k, sum(j=ceiling((i-m)/2)..i-m, binomial(j,i-m-j)*binomial(m+j-1,m-1))*binomial(2*(n-i)-k-1,n-i-1)/(n-i)), k>0.
R(n,0,m)=sum(j=ceiling((i-m)/2)..n-m, binomial(j,n-m-j)*binomial(m+j-1,m-1)), m=3.
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EXAMPLE
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0;
0,0;
0,0,0;
1,0,0,0;
3,1,0,0,0;
9,4,1,0,0,0;
22,14,5,1,0,0,0;
51,42,20,6,1,0,0,0;
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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