OFFSET
1,5
COMMENTS
Table starts
.1.......1..........1.............1..............1...............1
.1.......8.........26...........118............463............1930
.1......26........226..........2243..........21195..........201598
.1.....118.......2243.........72923........2126423........63806966
.1.....463......21195.......2126423......168897201.....14158198781
.1....1930.....201598......63806966....14158198781...3503850286857
.1....7843....1913495....1902974315..1166906554415.837962999003819
.1...32209...18172469...56814065240.96567512189416
.1..131698..172565016.1695753689937
.1..539466.1638746380
.1.2208130
.1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..84
EXAMPLE
Some solutions for n=3 k=4 0=self 1=nw 2=n 3=ne 4=w 6=e 7=sw 8=s 9=se (reciprocal directions total 10)
.00.69.47.00...68.48.69.47...00.69.47.00...69.49.00.00...00.68.47.00
.68.34.17.78...29.27.39.17...69.34.16.47...00.17.17.78...00.23.69.48
.26.34.36.24...36.14.36.14...00.16.34.00...36.34.36.24...00.00.00.12
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Dec 18 2012
STATUS
approved