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A342563 List points (x,y,z) having integer coordinates, sorted first by R=x^2+y^2+z^2 and in case of ties, then by z and last by polar angle 0 <= phi < 2*Pi in a polar coordinate system. Sequence gives z-coordinates. 7
0, -1, 0, 0, 0, 0, 1, -1, -1, -1, -1, 0, 0, 0, 0, 1, 1, 1, 1, -1, -1, -1, -1, 1, 1, 1, 1, -2, 0, 0, 0, 0, 2, -2, -2, -2, -2, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, -2, -2, -2, -2, 0, 0, 0, 0, 2, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,28

LINKS

Hugo Pfoertner, Table of n, a(n) for n = 0..10130

EXAMPLE

See A342561.

PROG

(PARI) A342563_vec=concat([[P[3] | P<-shell(n)] | n<-[0..7]]) \\ See A342561 for shell(). - M. F. Hasler, Apr 27 2021

CROSSREFS

Cf. A305575, A305576, A342561 (x-coordinates), A342562 (y-coordinates).

Cf. A343630, A343640.

Sequence in context: A028961 A110177 A036273 * A343633 A174469 A297934

Adjacent sequences:  A342560 A342561 A342562 * A342564 A342565 A342566

KEYWORD

sign

AUTHOR

Hugo Pfoertner, Apr 27 2021

STATUS

approved

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Last modified September 28 10:48 EDT 2021. Contains 347714 sequences. (Running on oeis4.)