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A307197 Fill the plane with the square spiral with cells numbered as in A275609; sequence gives the cells along the West spoke starting at the origin. 1
0, 2, 0, 2, 0, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2 (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 West of the X.

CROSSREFS

Cf. A275609.

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

Sequence in context: A022879 A064984 A323226 * A328949 A038555 A138108

Adjacent sequences:  A307194 A307195 A307196 * A307198 A307199 A307200

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 29 2019

EXTENSIONS

More terms from Alois P. Heinz, Mar 30 2019

STATUS

approved

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Last modified September 26 23:47 EDT 2020. Contains 337378 sequences. (Running on oeis4.)