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 A307195 Fill the plane with the square spiral with cells numbered as in A275609; sequence gives the cells along the North spoke starting at the origin. 1
 0, 3, 0, 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, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 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, 0, 3, 1, 3, 1, 3, 1, 3 (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 North of the X. CROSSREFS Cf. A275609. The eight spokes starting at the origin are A307193 - A307200. Sequence in context: A129555 A339558 A147755 * A231188 A249695 A136748 Adjacent sequences: A307192 A307193 A307194 * A307196 A307197 A307198 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 January 29 13:51 EST 2023. Contains 359923 sequences. (Running on oeis4.)