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A305576
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.
17
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, 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, 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
OFFSET
0,11
COMMENTS
Similar to A283308, but with secondary sorting by polar angle.
LINKS
Rainer Rosenthal, Table of n, a(n) for n = 0..17664, covering range r <= 75 (terms 0..7844 from Hugo Pfoertner).
EXAMPLE
See A305575.
PROG
(PARI) provided in A305575.
CROSSREFS
For the x-coordinates see A305575.
Sequence in context: A029354 A035434 A029223 * A129679 A319514 A141454
KEYWORD
sign,look
AUTHOR
Hugo Pfoertner, Jun 05 2018
STATUS
approved