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A102533
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Number of distinct values of i*j + j*k + k*i with 1 <= i < j <= k <= n.
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3
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0, 1, 4, 10, 20, 35, 50, 72, 100, 129, 163, 203, 244, 290, 346, 400, 461, 526, 600, 676, 756, 836, 925, 1018, 1117, 1220, 1325, 1435, 1554, 1683, 1811, 1938, 2078, 2212, 2367, 2526, 2677, 2835, 3003, 3169, 3350, 3527, 3714, 3898, 4099, 4304, 4498, 4713
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OFFSET
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0,3
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LINKS
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MATHEMATICA
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f[n_] := Length[ Union[ Flatten[ Table[i*j + j*k + k*i, {i, n}, {j, i + 1, n}, {k, j, n}] ]]]; Table[ f[n], {n, 48}]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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