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 A185088 #17 Sep 13 2019 10:22:45 %S A185088 1,1,1,1,0,1,4,1,10,1,4,1,4,9,1,1,6,1,10,7,20,1,24,1,4,9,24,1,36,1,4, %T A185088 33,22,25,4,1,4,9,20,1,132,1,16,45,28,1,8,1,4,9,26,1,36,1,104,49,34,1, %U A185088 0,1,4,49,16,25,36,1,34,57,140,1,84,1,4,9,76,73,36,1,26,1,80,1,16,11,128,9,4,1,180,105,64,55,92,25,36 %N A185088 a(n) = |n^2 - A185079(n)|. %C A185088 Zeros a(z)=0 occur at z=6, 60, 120, 360, 816,... For these z, A049417(z) | z^2, but there may be other numbers like 90, 180, 540,... satisfying this divisibility criterion which are not places of zeros (the criterion is necessary, not sufficient), see A185288. %H A185088 Amiram Eldar, <a href="/A185088/b185088.txt">Table of n, a(n) for n = 2..10000</a> %F A185088 a(A050376(n)) = 1. %Y A185088 Cf. A185079, A050376, A064380, A049417, A007357, A185078, A185373, A185383. %K A185088 nonn %O A185088 2,7 %A A185088 _Vladimir Shevelev_, Feb 18 2011