This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A025317 #21 Feb 28 2016 03:05:35 %S A025317 27625,32045,40885,45305,47125,55250,58565,60125,61625,64090,66625, %T A025317 67405,69745,71825,77285,78625,80665,81770,86125,87125,90610,91205, %U A025317 93925,94250,98345,98605,99125,99905,101065,105625,107185,110500,111605,112625 %N A025317 Numbers that are the sum of 2 distinct nonzero squares in 7 or more ways. %C A025317 Subsequence of A025298. But sequences A025317 and A025298 are different. 2*5^12 = 488281250 = 15625^2 + 15625^2 (not distinct squares) = 14395^2 + 16765^2 = 10625^2 + 19375^2 = 9125^2 + 20125^2 = 4775^2 + 21575^2 = 3125^2 + 21875^2 = 1457^2 + 22049^2 is not in A025317. - _Vaclav Kotesovec_, Feb 27 2016 %C A025317 Numbers in A025298 but not in A025317 are exactly those numbers of the form 2*p_1^(2*a_1)*p_2^(2*a_2)*...*p_m^(2*a_m)*q^12 where p_i are primes of the form 4k+3 and q is a prime of the form 4k+1. Thus 2*5^12 is the smallest term in A025298 that is not in A025317. - _Chai Wah Wu_, Feb 27 2016 %H A025317 Chai Wah Wu, <a href="/A025317/b025317.txt">Table of n, a(n) for n = 1..10000</a> %H A025317 <a href="/index/Su#ssq">Index entries for sequences related to sums of squares</a> %t A025317 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 - 1}]; Flatten[Position[t, _?(# >= 7 &)]] (* _T. D. Noe_, Apr 07 2011 *) %K A025317 nonn %O A025317 1,1 %A A025317 _David W. Wilson_