OFFSET
1,1
COMMENTS
Table starts
..9...11....22......24........41........42.........66.........65........97
.11...37....35.....100.......265.......293........756.......1937......2346
.22...35...211.....360......1461......2543.......8732......15431.....46953
.24..100...360....1907......6931.....21765......86233.....274628....965494
.41..265..1461....6931.....57941....216088....1661918....6745563..44238419
.42..293..2543...21765....216088...1283251...11808072...70311171.571963910
.66..756..8732...86233...1661918..11808072..221737222.1700323455
.65.1937.15431..274628...6745563..70311171.1700323455
.97.2346.46953..965494..44238419.571963910
.93.5788.84143.3146010.186635795
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..111
FORMULA
Empirical for column k:
k=1: a(n) = 3*a(n-2) -3*a(n-4) +a(n-6).
EXAMPLE
Some solutions for n=5, k=4
..2..0..1..0..1....0..1..2..0..2....0..2..0..2..0....1..0..1..2..0
..0..2..0..1..2....1..2..0..2..1....2..0..1..0..1....0..1..2..0..2
..1..0..1..2..1....0..1..2..1..2....0..2..0..2..0....1..2..0..2..0
..0..1..2..1..2....2..0..1..2..1....2..0..2..0..2....2..0..1..0..2
..1..2..1..2..1....0..1..2..1..2....0..2..1..2..1....1..2..0..2..0
..2..1..2..1..2....1..2..1..2..1....2..0..2..0..2....0..1..2..0..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 09 2013
STATUS
approved