OFFSET
1,12
COMMENTS
Table starts
.0....0........0...........0...............0................0.................0
.0....0........1...........2...............8...............28................98
.0....1........4..........47.............356.............2928.............23375
.0....2.......47.........988...........18754...........376200...........7393463
.0....8......356.......18754..........853778.........41272404........1939853778
.0...28.....2928......376200........41272404.......4770227060......541407069559
.0...98....23375.....7393463......1939853778.....541407069559...147555355904302
.0..346...189336...146226480.....92010224525...61782920451544.40507831420784920
.0.1218..1527478..2887603008...4354590810315.7039498755007500
.0.4290.12337033.57051216021.206242664480842
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..112
FORMULA
Empirical for column k:
k=2: a(n) = 3*a(n-1) +2*a(n-2) -2*a(n-4)
k=3: [order 23]
EXAMPLE
Some solutions for n=4 k=4
..0..1..2..0. .0..1..2..1. .0..1..2..1. .0..1..2..0. .0..1..2..0
..2..2..0..1. .2..1..0..0. .2..2..0..0. .2..1..0..1. .2..2..2..1
..1..0..1..2. .2..0..1..2. .2..1..0..2. .2..1..0..2. .1..0..0..2
..0..2..1..0. .2..1..0..1. .0..2..0..1. .0..2..1..0. .1..2..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Oct 26 2016
STATUS
approved