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A362956
a(n) is the y-coordinate of the n-th point in a square spiral mapped to a square grid rotated by Pi/4 using the distance-limited strip bijection described in A307110.
6
0, 0, 1, 1, 0, 0, -1, -1, 0, 1, 1, 2, 3, 2, 2, 1, 0, -1, -1, -2, -3, -2, -2, -1, 0, 1, 1, 2, 3, 3, 4, 4, 3, 2, 2, 1, 0, -1, -1, -2, -3, -3, -4, -4, -3, -2, -2, -1, 0, 1, 2, 2, 3, 4, 4, 5, 6, 5, 4, 3, 3, 2, 1, 1, 0, -1, -2, -2, -3, -4, -4, -5, -6, -5, -4, -3, -3, -2, -1, -1, 0, 0
OFFSET
0,12
LINKS
Hugo Pfoertner, Plot of mapped spiral, using Plot 2.
PROG
(PARI) \\ for functions ax, ay, p see A362955
for (k=0, 81, print1 (p(ax(k), ay(k))[2]", "))
CROSSREFS
A362955 gives the corresponding x-coordinates.
Sequence in context: A367896 A368123 A368128 * A323326 A274884 A076224
KEYWORD
sign
AUTHOR
Hugo Pfoertner, May 10 2023
STATUS
approved