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

Author

Reinhard Zumkeller, Oct 29 2002

Keywords

• nonn

Programs

Mathematica

n3ts[n_]:=Module[{n3=n^3,a,b,sr},sr=Sqrt[n3];a=(Floor[sr])^2;b=(Ceiling[ sr])^2;If[n3-aHarvey P. Dale, Nov 27 2011 *)

Formula

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