OFFSET
1,2
COMMENTS
Table starts
......1.........5.........19..........85.........381........1751..........8135
......5........85........455........3617.......28625......235827.......1972115
.....19.......455.......4057.......48335......562961.....7099021......90062519
.....85......3617......48335......988589....20960485...472565771...10857153407
....381.....28625.....562961....20960485...722587629.27941324053.1077779765471
...1751....235827....7099021...472565771.27941324053
...8135...1972115...90062519.10857153407
..38165..16703881.1168520339
.180325.142672901
.856945
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..60
EXAMPLE
Some solutions for n=4 k=3
.-1..1.-2....2..2.-2...-2..2..2....0..1..2....0..1..1....2..0..0....0.-1..2
.-1..1..1...-2..2.-2....2..2..2...-2..1..1...-1.-1..1....1..0..0....1.-1.-1
..0..1..1...-2..2.-2...-2.-2.-2...-2..1..1...-1.-1.-1....1.-1.-1....1..1..1
..0..0.-1...-1..2..1....1.-2.-1...-1.-1.-1....2..2.-2...-2.-1..1...-1.-1.-1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Dec 05 2011
STATUS
approved