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A077120
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n^3 times nearest integer square to n^3.
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0
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0, 1, 72, 675, 4096, 15125, 48600, 123823, 270848, 531441, 1024000, 1724976, 3048192, 4853173, 7419776, 11353500, 16777216, 24073700, 33685632, 47251651, 63368000, 85349376, 112964632, 147220700, 192485376, 244140625
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OFFSET
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0,3
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LINKS
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FORMULA
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MATHEMATICA
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n3ts[n_]:=Module[{n3=n^3, a, b, sr}, sr=Sqrt[n3]; a=(Floor[sr])^2; b=(Ceiling[ sr])^2; If[n3-a<b-n3, n3*a, n3*b]]; Array[n3ts, 30, 0] (* Harvey P. Dale, Nov 27 2011 *)
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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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