0,5

E. Grosswald, Representations of Integers as Sums of Squares. Springer-Verlag, NY, 1985, p. 84.

T. D. Noe, Table of n, a(n) for n = 0..10000

Table[PowersRepresentations[n, 5, 2] // Length, {n, 0, 100}] (* Jean-François Alcover, Feb 04 2016 *)

Sequence in context: A198337 A206483 A087011 * A156268 A053257 A151702

Adjacent sequences: A000171 A000172 A000173 * A000175 A000176 A000177

nonn

N. J. A. Sloane

approved