

A025295


Numbers that are the sum of 2 nonzero squares in 4 or more ways.


2



1105, 1625, 1885, 2125, 2210, 2405, 2465, 2665, 3145, 3250, 3445, 3485, 3625, 3770, 3965, 4225, 4250, 4420, 4505, 4625, 4745, 4810, 4930, 5125, 5185, 5330, 5365, 5525, 5785, 5945, 6205, 6290, 6305, 6409, 6500, 6565, 6625, 6890, 6970, 7085, 7225, 7250
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OFFSET

1,1


LINKS

Vaclav Kotesovec, Table of n, a(n) for n = 1..1500
Index entries for sequences related to sums of squares


MATHEMATICA

nn = 7250; 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, _?(# >= 4 &)]] (* T. D. Noe, Apr 07 2011 *)


CROSSREFS

Sequence in context: A321870 A257759 * A025314 A025287 A025305 A052155
Adjacent sequences: A025292 A025293 A025294 * A025296 A025297 A025298


KEYWORD

nonn


AUTHOR

David W. Wilson


STATUS

approved



