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A187990
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Number of nondecreasing arrangements of 6 numbers x(i) in -(n+4)..(n+4) with the sum of sign(x(i))*2^|x(i)| zero.
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2
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67, 117, 181, 260, 355, 467, 597, 746, 915, 1105, 1317, 1552, 1811, 2095, 2405, 2742, 3107, 3501, 3925, 4380, 4867, 5387, 5941, 6530, 7155, 7817, 8517, 9256, 10035, 10855, 11717, 12622, 13571, 14565, 15605, 16692, 17827, 19011, 20245, 21530, 22867, 24257
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OFFSET
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0,1
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LINKS
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FORMULA
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G.f.: -(-67+151*x-115*x^2+30*x^3)/(x-1)^4 . - R. J. Mathar, Apr 30 2023
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EXAMPLE
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Some solutions for n=3
-2 -5 -6 -5 -7 -6 -4 -4 -6 -5 -7 -6 -3 -6 -3 -7
-1 -4 -5 -1 -6 -3 -3 -2 -6 -4 -3 -6 -3 -3 -3 -5
0 -4 4 -1 5 -2 -3 -1 -5 -1 1 5 -3 -3 -2 -3
0 4 4 2 5 -2 -1 -1 4 1 1 5 2 3 1 3
1 4 5 4 6 4 1 3 4 4 2 5 2 3 1 5
1 5 5 4 6 6 5 4 7 5 7 5 4 6 4 7
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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