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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. 10
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 (list; graph; refs; listen; history; text; internal format)
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.

Cf. A000328, A004018, A283307, A283308, A307014, A307016, A307017, A308080, A308081.

Sequence in context: A029354 A035434 A029223 * A129679 A319514 A141454

Adjacent sequences:  A305573 A305574 A305575 * A305577 A305578 A305579

KEYWORD

sign,look

AUTHOR

Hugo Pfoertner, Jun 05 2018

STATUS

approved

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Last modified August 11 00:32 EDT 2020. Contains 336403 sequences. (Running on oeis4.)