A125021 Even numbers with a unique partition as the sum of 2 squares x^2 + y^2.

0, 2, 4, 8, 10, 16, 18, 20, 26, 32, 34, 36, 40, 52, 58, 64, 68, 72, 74, 80, 82, 90, 98, 104, 106, 116, 122, 128, 136, 144, 146, 148, 160, 162, 164, 178, 180, 194, 196, 202, 208, 212, 218, 226, 232, 234, 242, 244, 256, 272, 274, 288, 292, 296, 298, 306, 314

Offset: 1

Author

Artur Jasinski, Nov 16 2006, corrected Nov 18 2006

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A002145, A124982, A125022.

Programs

Mathematica

Select[2 * Range[0, 200], Length @ PowersRepresentations[#, 2, 2] == 1 &] (* Amiram Eldar, Mar 12 2020 *)