OFFSET
1,5
COMMENTS
Table starts
.1...1....1.....1......1.......1........1.........1...........1............1
.1...5....7....18.....31......65......130.......253.........519.........1018
.1...7....7....19.....35......95......223.......571........1535.........4091
.1..18...19....48....175.....508.....1522......5065.......16968........56041
.1..31...35...175...1015....3514....14409.....69402......304094......1294490
.1..65...95...508...3514...19041...101878....624052.....3827796.....22241786
.1.130..223..1522..14409..101878...750083...6104533....48998539....384601868
.1.253..571..5065..69402..624052..6104533..67847199...723450111...7524339497
.1.519.1535.16968.304094.3827796.48998539.723450111.10455199270.145448283457
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..197
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = a(n-1) +3*a(n-2) -4*a(n-4) for n>5
k=3: [order 18] for n>19
k=4: [order 70] for n>71
EXAMPLE
Some solutions for n=6 k=6
..0..0..0..0..1..1. .0..0..0..1..0..1. .0..0..0..0..1..0. .0..0..1..1..0..0
..0..0..0..0..1..1. .0..0..0..1..1..1. .0..0..0..0..1..1. .1..0..0..1..0..0
..0..0..0..0..1..1. .0..0..0..1..0..1. .0..0..0..0..0..0. .0..0..1..1..1..1
..0..0..0..0..0..0. .0..0..0..0..0..0. .1..1..1..1..0..0. .1..1..1..1..0..1
..1..1..1..0..1..0. .1..1..0..0..1..0. .0..1..0..0..1..1. .1..1..1..0..0..0
..0..1..0..0..1..1. .0..1..1..0..1..1. .1..1..1..0..1..0. .1..1..1..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 10 2018
STATUS
approved