A077120 n^3 times nearest integer square to n^3.

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

Offset

0,3

Links

Table of n, a(n) for n=0..25.

Formula

a(n) = A000578(n)*A077118(n).

Mathematica

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 *)

Crossrefs

Sequence in context: A235178 A085718 A205329 * A200451 A097205 A253917

Adjacent sequences: A077117 A077118 A077119 * A077121 A077122 A077123

Keyword

nonn

Author

Reinhard Zumkeller, Oct 29 2002

Status

approved