OFFSET
0,2
COMMENTS
The first inflation-deflation step leads to the following configuration (where O marks the reference vertex for this sequence; this vertex is hexavalent from the second inflation-deflation step onwards):
+-------------+
/ \ / \
/ \ / \
/ O-------+ \
/ / \ \
/ / \ \
+-----+-------------+-----+
After k > 1 inflation-deflation steps, we can compute a finite coordination sequence c_k (until we reach the edge of the tiling after k steps). It appears that for i and j such that 1 < i < j, c_i is a prefix of c_j; this sequence is the limiting sequence of the { c_i, i > 1 } family.
LINKS
Rémy Sigrist, Table of n, a(n) for n = 0..1024
Rémy Sigrist, Illustration of the first terms
Rémy Sigrist, C++ program for A304050
Tilings Encyclopedia, Half-Hex
PROG
(C++) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, May 05 2018
STATUS
approved