A102313 - OEIS

A102313

Least number k such that k^3 is the sum of n positive squares.

1, 2, 3, 3, 2, 3, 3, 2, 3, 3, 3, 3, 3, 4, 3, 3, 4, 3, 3, 4, 3, 4, 4, 3, 4, 4, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 4, 4, 5, 4, 4, 5, 4, 5, 5, 4, 5, 5, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5

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OFFSET

1,2

COMMENTS

The cube root of A100499. It appears that for n in [k^3+1,(k+1)^3], a(n) is either k+1 or k+2.

LINKS

Table of n, a(n) for n=1..105.

CROSSREFS

Cf. A100499 (least cube that is the sum of n positive squares).

Sequence in context: A182128 A131294 A276869 * A262955 A276859 A007538

Adjacent sequences: A102310 A102311 A102312 * A102314 A102315 A102316

KEYWORD

nonn

AUTHOR

T. D. Noe, Jan 03 2005

STATUS

approved