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A307447 Second coordinate of a contiguous path on the odd numbered points of a square lattice leading to a distance-limited bijection with the even numbered points of a square lattice rotated by Pi/6 around the common point (0,0). A307446 gives the first coordinate. 4
1, 1, 3, 5, 5, 5, 3, 3, 3, 5, 7, 7, 9, 11, 11, 11, 13, 15, 15, 17, 19, 19, 19, 17, 17, 17, 19, 21, 21, 21, 19, 19, 19, 17, 15, 15, 13, 11, 11, 11, 9, 9, 9, 11, 13, 13, 13, 11, 11, 11, 13, 15, 15, 17, 19, 19, 19, 21, 23, 23, 25, 27, 27, 27, 25, 25, 25, 27 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

For a description of the construction and visualizations see A307446.

LINKS

Hugo Pfoertner, Table of n, a(n) for n = 1..10000

Index entries for sequences related to coordinates of 2D curves

PROG

See A307446 for PARI code.

CROSSREFS

Cf. A307110, A307446.

Coordinates of corresponding points on rotated lattice: A307482, A307483.

Sequence in context: A307634 A265222 A160585 * A016658 A331210 A330874

Adjacent sequences:  A307444 A307445 A307446 * A307448 A307449 A307450

KEYWORD

nonn

AUTHOR

Hugo Pfoertner, Apr 10 2019

STATUS

approved

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Last modified September 27 08:39 EDT 2021. Contains 347689 sequences. (Running on oeis4.)