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 A134422 Square numbers which are sums of 2 distinct nonzero squares. 3
 25, 100, 169, 225, 289, 400, 625, 676, 841, 900, 1156, 1225, 1369, 1521, 1600, 1681, 2025, 2500, 2601, 2704, 2809, 3025, 3364, 3600, 3721, 4225, 4624, 4900, 5329, 5476, 5625, 6084, 6400, 6724, 7225, 7569, 7921, 8100, 8281, 9025, 9409, 10000, 10201 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA a(n)=A009003(n)^2 MATHEMATICA c = {}; Do[Do[k = a^2 + b^2; If[IntegerQ[Sqrt[k]], AppendTo[c, k]], {a, 1, b-1}], {b, 1, 200}]; Union[c] (*Artur Jasinski*) CROSSREFS Cf. A000404, A000415, A009003. Sequence in context: A158547 A144854 A198385 * A016850 A221274 A042220 Adjacent sequences:  A134419 A134420 A134421 * A134423 A134424 A134425 KEYWORD nonn AUTHOR Artur Jasinski, Oct 25 2007 STATUS approved

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