OFFSET
1,1
COMMENTS
Table starts
......4........16............60..............216.................756
.....16.......148..........1164.............8532...............59916
.....60......1164.........18556...........275796.............3924212
....216......8532........275796..........8317996...........240647068
....756.....59916.......3924212........240647068.........14197016484
...2592....408596......54199284.......6766301156........815458664276
...8748...2727564.....732561916.....186315931804......45920055321732
..29160..17914580....9740150372....5049212790572....2546667557472940
..96228.116170764..127846717716..135126561336764..139535357045338964
.314928.745617300.1660741102212.3579710280903028.7570570235882777884
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..220
FORMULA
Empirical for column k:
k=1: a(n) = 6*a(n-1) -9*a(n-2)
k=2: a(n) = 12*a(n-1) -38*a(n-2) +12*a(n-3) -a(n-4) for n>5
k=3: [order 8] for n>9
k=4: [order 20] for n>22
k=5: [order 42] for n>45
EXAMPLE
Some solutions for n=3 k=4
..0..3..2..3. .2..0..2..2. .0..0..0..2. .0..3..2..3. .0..2..2..2
..2..3..2..2. .2..0..0..0. .0..0..0..2. .2..3..3..3. .0..0..0..2
..2..2..3..3. .3..1..0..2. .1..1..0..1. .2..2..2..2. .0..2..2..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 20 2016
STATUS
approved