A157075 Positive integers n for which the Diophantine equation x^2 + y^2 = n^2/2 has relatively prime solutions.

10, 26, 34, 50, 58, 74, 82, 106, 122, 130, 146, 170, 178, 194, 202, 218, 226, 250, 274, 290, 298, 314, 338, 346, 362, 370, 386, 394, 410, 442, 458, 466, 482, 514, 530, 538, 554, 562, 578, 586, 610, 626, 634, 650, 674, 698, 706, 730, 746, 754, 778, 794, 802

Offset: 1

Author

Knut Angstrom (angstrom.knut(AT)telia.com), Feb 22 2009

Keywords

• nonn

Formula

a(n) = 2 * A008846(n). [From N. J. A. Sloane, Feb 24 2009]

Extensions

Edited and extended by Max Alekseyev, Apr 22 2010