1,1

The sequence is increasing only up to a(23) = 3461 > a(24) = 3449. - M. F. Hasler, Jan 25 2013

Zak Seidov and Donovan Johnson, Table of n, a(n) for n = 1..1000 (first 200 terms from Zak Seidov)

Index entries for sequences related to sums of squares

Zak Seidov, First 300 terms of A025415

a(1) = 1^2+2^2+3^2 = 1+4+9 = 14, which obviously is the smallest sum of 3 distinct nonzero squares and cannot be written otherwise as such a sum.

a(2) = 1^2+5^2+6^2 = 1+25+36 = 2^2+3^2+7^2 = 4+9+49 = 62.

Sequence in context: A264854 A189948 A252255 * A307253 A125849 A003695

Adjacent sequences: A025412 A025413 A025414 * A025416 A025417 A025418

nonn

David W. Wilson

approved