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.

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

Offset: 1

Author

Hugo Pfoertner, Apr 10 2019

Keywords

• nonn

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

Crossrefs

Cf. A307110, A307446.

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

Programs

PARI

\\ See A307446 for PARI code.