OFFSET
1,1
COMMENTS
Table starts
.....16......50.......144.........398.........1076...........2866
.....50.....228.......928........3574........13346..........48848
....144.....928......5196.......27296.......137988.........681546
....398....3574.....27296......195428......1340034........8974124
...1076...13346....137988.....1340034.....12412248......112308598
...2866...48848....681546.....8974124....112308598.....1374773712
...7560..176420...3311312....59037352....997114552....16500794898
..19798..631130..15908352...383935642...8749889970...195824119834
..51580.2242678..75789960..2474858156..76070757246..2302059880080
.133850.7930164.358924192.15855538026.657191443192.26894984140858
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..144
FORMULA
Empirical for column k:
k=1: a(n) = 4*a(n-1) -a(n-2) -10*a(n-3) +8*a(n-4)
k=2: [order 8]
k=3: [order 17]
k=4: [order 32]
k=5: [order 67]
EXAMPLE
Some solutions for n=4 k=4
..1..0..0..0..0....0..1..1..1..0....0..0..0..0..0....0..1..1..0..1
..0..0..0..1..1....0..0..1..1..0....0..0..0..1..1....0..0..1..1..0
..0..0..1..1..1....0..1..1..1..0....0..0..0..0..0....0..1..1..1..1
..1..0..0..1..1....1..1..1..1..1....0..0..1..0..1....0..0..1..1..1
..0..0..0..0..1....0..1..0..1..0....1..0..0..0..0....1..0..0..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 17 2014
STATUS
approved