1,2

Table of n, a(n) for n=1..43.

a(3) = 49 = 36 + 9 + 4 is the smallest square which is the sum of three squares.

Cf. A018935, A018937.

Sequence in context: A067893 A067794 A068874 * A212190 A324871 A241836

Adjacent sequences: A018933 A018934 A018935 * A018937 A018938 A018939

nonn

N. J. A. Sloane.

Corrected and extended by David W. Wilson.

approved