A307199 - OEIS

A307199

Fill the plane with the square spiral with cells numbered as in A275609; sequence gives the cells along the South spoke starting at the origin.

0, 3, 0, 3, 0, 3, 0, 4, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0, 3, 0

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

OFFSET

0,2

COMMENTS

The Example section of A275609 shows the central portion of the spiral very clearly. The link below shows a larger portion but is harder to read.

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..1000

N. J. A. Sloane, Central portion of spiral, shown without spaces [The central 0 (at (0,0)) has been changed to an X. The illustration shows cells (x,y) with -35 <= x <= 35, -33 <= y <= 36.] The present sequence gives the numbers to the South of the X.

CROSSREFS

Cf. A275609.

The eight spokes starting at the origin are A307193 - A307200.

Sequence in context: A021037 A053387 A221170 * A141030 A221168 A194084

Adjacent sequences: A307196 A307197 A307198 * A307200 A307201 A307202

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 29 2019

EXTENSIONS

More terms from Alois P. Heinz, Mar 30 2019

STATUS

approved