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Numbers that are the sum of 4 nonzero squares in exactly 4 ways.

4

`%I #17 Jun 15 2018 05:05:51
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`%S 52,58,63,70,76,84,87,91,93,97,98,105,119,123,139,140,141,142,146,155,
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`%T 158,185,197,206,208,221,232,233,269,280,281,304,336,392,560,568,584,
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`%U 632,824,832,928,1120,1216,1344,1568,2240,2272,2336,2528,3296,3328,3712,4480
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`%N Numbers that are the sum of 4 nonzero squares in exactly 4 ways.
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`%H Robert Price, <a href="/A025360/b025360.txt">Table of n, a(n) for n = 1..77</a>
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`%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/SquareNumber.html">Square Number.</a>
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`%H <a href="/index/Su#ssq">Index entries for sequences related to sums of squares</a>
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`%F {n: A025428(n) = 4}. - _R. J. Mathar_, Jun 15 2018
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`%K nonn
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`%O 1,1
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`%A _David W. Wilson_
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