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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. 1
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
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
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 June 13 17:32 EDT 2024. Contains 373391 sequences. (Running on oeis4.)