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Even numbers that are a sum of two squares plus 1.
4

%I #29 Sep 17 2024 10:16:23

%S 2,6,10,14,18,26,30,38,42,46,50,54,62,66,74,82,86,90,98,102,110,114,

%T 118,122,126,138,146,150,154,158,170,174,182,186,194,198,206,222,226,

%U 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

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

%C The first 13 terms coincide with A000952.

%C If the conjecture in A000952 is true, the two sequences are the same. - _R. J. Mathar_, May 18 2017

%C Numbers that are the sum of two centered square numbers (A001844). - _Ilya Gutkovskiy_, Jun 03 2017

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

%Y Cf. A000952, A001481, A166687.

%K nonn

%O 1,1

%A _Jean-François Alcover_, May 11 2017