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 A025298 Numbers that are the sum of 2 nonzero squares in 7 or more ways. 5
 27625, 32045, 40885, 45305, 47125, 55250, 58565, 60125, 61625, 64090, 66625, 67405, 69745, 71825, 77285, 78625, 80665, 81770, 86125, 87125, 90610, 91205, 93925, 94250, 98345, 98605, 99125, 99905, 101065, 105625, 107185, 110500, 111605, 112625 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Robert Price, Table of n, a(n) for n = 1..100 Index entries for sequences related to sums of squares MATHEMATICA Parallelize[Select[Range[120000], Length[PowersRepresentations[#, 2, 2]]>6&]] (* Harvey P. Dale, Feb 19 2011 *) nn = 112625; t = Table[0, {nn}]; lim = Floor[Sqrt[nn - 1]]; Do[num = i^2 + j^2; If[num <= nn, t[[num]]++], {i, lim}, {j, i}]; Flatten[Position[t, _?(# >= 7 &)]] (* T. D. Noe, Apr 07 2011 *) CROSSREFS Cf. A025290, A025297, A025299, A025335. Sequence in context: A224110 A251958 A366491 * A025317 A025299 A025318 Adjacent sequences: A025295 A025296 A025297 * A025299 A025300 A025301 KEYWORD nonn AUTHOR David W. Wilson STATUS approved

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Last modified August 8 17:42 EDT 2024. Contains 375023 sequences. (Running on oeis4.)