OFFSET
1,2
COMMENTS
Table starts
..1....2.....3.......4........6..........9..........13............19
..2....5....11......24.......55........123.........276...........621
..3...11....33.....114......377.......1249........4151.........13765
..4...24...114.....578.....2859......14187.......70982........353880
..6...55...377....2859....21185.....158361.....1182050.......8806229
..9..123..1249...14187...158361....1767431....19730839.....220211372
.13..276..4151...70982..1182050...19730839...329926211....5515740725
.19..621.13765..353880..8806229..220211372..5515740725..137994394960
.28.1395.45704.1763742.65681168.2459567704.92205260806.3452787904343
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..287
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1) +a(n-3)
k=2: a(n) = a(n-1) +2*a(n-2) +2*a(n-3) -a(n-5)
k=3: [order 16]
k=4: [order 45]
EXAMPLE
Some solutions for n=5 k=4
..0..0..0..1. .0..0..0..0. .0..1..1..0. .1..0..0..1. .1..1..1..0
..0..1..0..1. .1..0..0..0. .0..0..0..0. .1..0..0..1. .0..1..0..0
..0..1..0..0. .1..0..1..1. .0..0..0..0. .0..0..1..0. .0..0..1..0
..0..0..1..1. .0..1..0..0. .0..0..1..0. .0..1..1..0. .0..0..1..0
..0..0..0..0. .1..1..1..0. .0..0..1..0. .0..0..1..0. .1..1..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 14 2017
STATUS
approved