OFFSET
1,1
COMMENTS
Table starts
...2.....4.......7........13...........24.............44................81
...4....12......30........96..........286............848..............2620
...7....30.....136.......687.........3616..........19277............105494
..13....96.....687......6784........64819.........654120...........6743851
..24...286....3616.....64819......1180260.......22630723.........444282892
..44...848...19277....654120.....22630723......833228038.......31284950414
..81..2620..105494...6743851....444282892....31284950414.....2245841563645
.149..7964..581688..69857453...8764056739..1180379285603...161959380452328
.274.24332.3225186.727765313.173651084724.44714930487805.11725115199949679
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..220
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1) +a(n-2) +a(n-3)
k=2: a(n) = 2*a(n-1) +4*a(n-2) +4*a(n-3) -14*a(n-4) -14*a(n-5) -4*a(n-6)
k=3: [order 17]
k=4: [order 34]
EXAMPLE
Some solutions for n=5 k=4
..1..1..0..0. .0..0..0..1. .0..1..0..1. .0..0..1..0. .0..0..0..0
..1..1..0..1. .0..0..0..1. .1..0..0..0. .1..1..1..1. .0..0..0..1
..0..1..1..0. .0..0..0..0. .0..0..0..0. .0..0..1..1. .1..0..0..0
..1..0..0..0. .0..0..0..0. .0..0..0..1. .0..1..1..1. .0..0..0..0
..0..0..1..1. .0..0..1..1. .1..0..1..0. .1..0..1..1. .0..1..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 25 2017
STATUS
approved