OFFSET
1,2
COMMENTS
Column 6 of A220602
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3 0=self 2=n 3=ne 4=w 6=e 7=sw 8=s (reciprocal directions total 10)
.00.78.00.67.46.47...00.78.78.78.78.00...00.78.78.00.78.78...00.00.68.48.00.00
.38.26.34.78.38.00...38.23.23.23.26.47...38.23.27.37.23.28...68.48.26.24.67.47
.26.46.34.26.24.00...26.46.46.46.34.00...26.34.36.46.46.24...26.24.00.36.34.00
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 16 2012
STATUS
approved