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A187991
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Number of nondecreasing arrangements of 7 numbers x(i) in -(n+5)..(n+5) with the sum of sign(x(i))*2^|x(i)| zero.
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1
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411, 632, 912, 1257, 1673, 2166, 2742, 3407, 4167, 5028, 5996, 7077, 8277, 9602, 11058, 12651, 14387, 16272, 18312, 20513, 22881, 25422, 28142, 31047, 34143, 37436, 40932, 44637, 48557, 52698
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3:
-7 -8 -7 -1 -6 -8 -8 -7 -4 -6 -7 -5 -8 -7 -8 -6
-4 -5 -2 -1 -3 -5 -6 -5 -2 -3 -5 -3 -3 -7 -3 -5
-4 -1 -2 -1 -1 2 -1 -3 -2 -3 4 1 -2 -7 -3 -4
-4 0 1 -1 1 2 0 3 -2 2 4 1 -2 6 4 4
4 0 1 1 2 3 0 5 -1 2 5 1 3 6 6 5
5 5 2 1 2 4 6 6 -1 3 5 1 3 7 6 5
7 8 7 2 6 8 8 6 5 6 6 5 8 7 7 5
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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