OFFSET
1,2
COMMENTS
Table starts
...1.....2.......4.........8..........16...........32.............64
...2.....8......28........97.........338.........1178...........4105
...4....28.....142.......732........3694........18754..........94842
...8....97.....732......5956.......46516.......368049........2908839
..16...338....3694.....46516......561290......6845143.......83509525
..32..1178...18754....368049.....6845143....127789964.....2392115850
..64..4105...94842...2908839....83509525...2392115850....69104597430
.128.14305..480321..22987303..1016183713..44629532699..1987324601389
.256.49850.2431390.181744907.12380173295.834140753692.57271367516963
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..219
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1)
k=2: a(n) = 4*a(n-1) -2*a(n-2) +a(n-3) -a(n-4)
k=3: [order 12] for n>14
k=4: [order 40] for n>41
EXAMPLE
Some solutions for n=5 k=4
..0..0..1..1. .0..1..0..0. .0..0..1..1. .0..0..0..0. .0..0..1..0
..0..0..0..0. .1..0..0..1. .1..1..0..0. .1..0..0..1. .0..1..1..1
..1..1..0..0. .0..0..1..1. .1..0..0..1. .1..0..1..0. .1..1..0..1
..0..0..0..0. .0..1..1..1. .1..0..0..1. .1..0..0..0. .1..1..0..1
..0..0..0..0. .1..0..0..0. .1..1..0..1. .1..0..0..1. .0..1..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Oct 12 2018
STATUS
approved