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Search: id:A145874
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| A145874 |
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Number of permutations of the numbers 1, 2, ..., n such that for all 1 <= k <= n the average of the first k numbers is at least the average of all n numbers. |
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1
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OFFSET
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1,3
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EXAMPLE
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For n = 3, the 3 permutations are (2,3,1), (3,1,2) and (3,2,1).
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CROSSREFS
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Sequence in context: A024496 A081890 A047907 this_sequence A147681 A055487 A121130
Adjacent sequences: A145871 A145872 A145873 this_sequence A145875 A145876 A145877
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KEYWORD
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nonn
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AUTHOR
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N. Sato (nsato7(AT)yahoo.ca), Oct 22 2008
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