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%I #26 May 17 2019 22:08:48
%S 0,0,1,0,-1,1,1,-1,-1,0,2,0,-2,1,2,2,1,-1,-2,-2,-1,2,2,-2,-2,0,3,0,-3,
%T 1,3,3,1,-1,-3,-3,-1,2,3,3,2,-2,-3,-3,-2,0,4,0,-4,1,4,4,1,-1,-4,-4,-1,
%U 3,3,-3,-3,2,4,4,2,-2,-4,-4,-2,0,3,4,5,4,3,0,-3,-4,-5,-4,-3,1
%N List points (x,y) having integer coordinates, sorted first by radial coordinate r and in case of ties, by polar angle 0 <= phi < 2*Pi in a polar coordinate system. Sequence gives y-coordinates.
%C Similar to A283308, but with secondary sorting by polar angle.
%H Rainer Rosenthal, <a href="/A305576/b305576.txt">Table of n, a(n) for n = 0..17664</a>, covering range r <= 75 (terms 0..7844 from Hugo Pfoertner).
%e See A305575.
%o (PARI) provided in A305575.
%Y For the x-coordinates see A305575.
%Y Cf. A000328, A004018, A283307, A283308, A307014, A307016, A307017, A308080, A308081.
%K sign,look
%O 0,11
%A _Hugo Pfoertner_, Jun 05 2018
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