OFFSET
1,2
COMMENTS
Column 7 of A220738
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..115
EXAMPLE
Some solutions for n=3 0=self 1=nw 3=ne 4=w 6=e 7=sw 9=se (reciprocal directions total 10)
.00.67.49.00.00.79.00...00.79.79.79.00.00.00...00.67.47.00.00.00.00
.39.00.79.17.39.67.14...39.39.13.16.14.69.47...39.39.79.00.00.00.00
.00.13.36.14.36.14.00...00.16.14.00.00.36.14...00.13.16.14.00.00.00
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 18 2012
STATUS
approved