OFFSET
1,1
COMMENTS
Table starts
..2....4......7......12........20.........33..........54...........88
..4...16.....49.....144.......400.......1089........2916.........7744
..7...49....230....1020......4120......16109.......61003.......227197
.12..144...1020....6752.....39276.....219061.....1165366......6052170
.20..400...4120...39276....316744....2431277....17515482....122505076
.33.1089..16109..219061...2431277...25571618...248652016...2339185464
.54.2916..61003.1165366..17515482..248652016..3210775788..40009922008
.88.7744.227197.6052170.122505076.2339185464.40009922008.659966594476
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..363
EXAMPLE
Some solutions for n=4, k=3
..0..0..0....0..0..0....0..0..0....1..0..0....1..1..0....1..1..0....0..1..1
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....1..0..1....1..1..0
..0..0..0....1..0..1....1..1..1....1..0..1....1..1..1....1..0..0....0..1..1
..1..1..1....0..0..0....0..0..0....0..1..0....0..0..0....0..1..1....1..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 12 2012
STATUS
approved