OFFSET
1,2
COMMENTS
Table starts
...1....2....4......8.......16........32..........64..........128
...2....7...13.....29.......73.......157.........353..........869
...4...13...20.....44......123.......343.........957.........2710
...8...29...44....174.....1052......4488.......18758........89713
..16...73..123...1052.....6908.....39124......259556......1718835
..32..157..343...4488....39124....379236.....3848010.....39235328
..64..353..957..18758...259556...3848010....59666756....931277377
.128..869.2710..89713..1718835..39235328...931277377..22388413097
.256.1993.7749.409166.11081989.404291236.14739630633.545009501463
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..180
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1).
k=2: a(n) = 4*a(n-1) -5*a(n-2) +10*a(n-3) -24*a(n-4) +16*a(n-5) for n>6.
k=3: [order 16] for n>17.
k=4: [order 66] for n>70.
EXAMPLE
Some solutions for n=5, k=4
..0..1..0..1. .0..1..1..0. .0..1..0..1. .0..1..0..1. .0..1..0..0
..0..0..1..0. .1..1..1..1. .0..0..0..1. .0..1..1..0. .1..1..0..1
..0..0..1..1. .0..0..1..1. .0..0..1..0. .1..1..1..1. .0..0..0..1
..1..0..0..0. .1..0..1..1. .1..0..0..1. .0..0..0..0. .1..0..0..0
..1..0..1..1. .0..0..1..0. .0..1..1..0. .1..1..1..1. .1..0..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 31 2018
STATUS
approved