1,1

Table of n, a(n) for n=1..49.

Stephan Daniel, On the sum of a square and a square of a prime, Math. Proc. Cambr. Phil. Soc. vol. 131. no. 1 (2001) 1-22.

Index entries for sequences related to sums of squares

50 = 1^2+7^2 = 5^2+5^2. 85 = 6^2+7^2 = 9^2+2^2. 125 = 2^2+11^2 = 10^2+5^2.

425 = 8^2+19^2 = 16^2+13^2 = 20^2+5^2 .

Sequence in context: A045165 A261286 A259670 * A224551 A262149 A228953

Adjacent sequences: A138378 A138379 A138380 * A138382 A138383 A138384

easy,nonn

R. J. Mathar, May 08 2008

Typo corrected by Zak Seidov, May 09 2008

approved