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A025320
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Numbers that are the sum of 2 distinct nonzero squares in 10 or more ways.
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7
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138125, 160225, 204425, 226525, 235625, 276250, 292825, 300625, 308125, 320450, 333125, 337025, 348725, 359125, 386425, 393125, 403325, 408850, 416585, 430625, 435625, 453050, 456025, 469625, 471250, 491725, 493025, 495625, 499525, 505325
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..30.
Index entries for sequences related to sums of squares
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MATHEMATICA
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nn = 505325; t = Table[0, {nn}]; lim = Floor[Sqrt[nn - 1]]; Do[num = i^2 + j^2; If[num <= nn, t[[num]]++], {i, lim}, {j, i - 1}]; Flatten[Position[t, _?(# >= 10 &)]] (* T. D. Noe, Apr 07 2011 *)
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CROSSREFS
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Cf. A025301. [From R. J. Mathar, Oct 23 2008]
Sequence in context: A110598 A069336 A025301 * A025293 A025311 A081429
Adjacent sequences: A025317 A025318 A025319 * A025321 A025322 A025323
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KEYWORD
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nonn
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AUTHOR
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David W. Wilson
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STATUS
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approved
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