A286636 Even numbers that are a sum of two squares plus 1.

2, 6, 10, 14, 18, 26, 30, 38, 42, 46, 50, 54, 62, 66, 74, 82, 86, 90, 98, 102, 110, 114, 118, 122, 126, 138, 146, 150, 154, 158, 170, 174, 182, 186, 194, 198, 206, 222, 226, 230, 234, 242, 246, 258, 262, 266, 270, 278, 282, 290, 294, 306, 314, 318, 326, 334, 338, 350, 354, 362, 366, 370, 374, 378, 390, 398

Offset: 1

Author

Jean-François Alcover, May 11 2017

Keywords

• nonn

Comments

The first 13 terms coincide with A000952.

If the conjecture in A000952 is true, the two sequences are the same. - R. J. Mathar, May 18 2017

Numbers that are the sum of two centered square numbers (A001844). - Ilya Gutkovskiy, Jun 03 2017

Crossrefs

Cf. A000952, A001481, A166687.

Programs

Mathematica

Select[Range[2, 400, 2], SquaresR[2, # - 1] != 0 &]