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 A025296 Numbers that are the sum of 2 nonzero squares in 5 or more ways. 1

%I

%S 5525,8125,8450,9425,10625,11050,12025,12325,13325,14365,14450,15725,

%T 16250,17225,17425,18125,18785,18850,19825,21125,21250,22100,22525,

%U 23125,23725,24050,24505,24650,25625,25925,26650,26825,27625,28730,28925,29725

%N Numbers that are the sum of 2 nonzero squares in 5 or more ways.

%H <a href="/index/Su#ssq">Index entries for sequences related to sums of squares</a>

%t nn = 30000; 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, _?(# >= 5 &)]] (* _T. D. Noe_, Apr 07 2011 *)

%K nonn

%O 1,1

%A _David W. Wilson_

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Last modified January 19 20:41 EST 2020. Contains 331066 sequences. (Running on oeis4.)