A349320 a(n) is the Y-coordinate of the n-th point of the hexdragon curve; sequence A349319 gives X-coordinates.
0, 0, 1, 2, 3, 3, 4, 5, 5, 4, 4, 5, 6, 6, 7, 8, 9, 9, 10, 11, 11, 10, 10, 11, 11, 10, 9, 9, 8, 7, 7, 8, 8, 7, 7, 8, 9, 9, 10, 11, 12, 12, 13, 14, 14, 13, 13, 14, 15, 15, 16, 17, 18, 18, 19, 20, 20, 19, 19, 20, 20, 19, 18, 18, 17, 16, 16, 17, 17, 16, 16, 17, 17
Offset: 0
Keywords
Examples
The hexdragon curve starts as follows:
16-17
/
15
\
14
/
12-13
/
11 8--7
\ / \
10--9 6
/
4--5
/
3
\
2
/
0--1
- so a(0) = a(1) = 0,
a(2) = 1,
a(3) = 2,
a(4) = a(5) = 3,
a(6) = a(9) = a(10) = 4,
a(7) = a(8) = a(11) = 5,
a(12) = a(13) = 6,
a(14) = 7,
a(15) = 8,
a(16) = a(17) = 9.
Links
- Rémy Sigrist, Table of n, a(n) for n = 0..4373
- Joerg Arndt, Matters Computational (The Fxtbook), section 1.31.4 Terdragon and hexdragon.
- Rémy Sigrist, Representation of the hexdragon curve after 6 iterations
- Rémy Sigrist, PARI program for A349320
- Index entries for sequences related to coordinates of 2D curves
Programs
-
PARI
See Links section.
Comments