OFFSET
1,5
COMMENTS
Table starts
....0........0............1..............2...............8...............28
....0........4...........46............384............2894............20444
....1.......46..........996..........16860..........259040..........3753846
....2......384........16860.........592416........18844474........566131860
....8.....2894.......259040.......18844474......1240628942......77217209188
...28....20444......3753846......566131860.....77217209188....9962925424456
...94...138944.....52433492....16393550046...4633270354464.1239330073038612
..304...918744....713549156...462579750172.270955366695864
..960..5954690...9525564453.12805032188772
.2976.38005496.125290653912
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..84
FORMULA
Empirical for column k:
k=1: a(n) = 4*a(n-1) -8*a(n-3) -4*a(n-4) for n>7
k=2: [order 8]
k=3: [order 24] for n>25
EXAMPLE
Some solutions for n=3 k=4
..0..1..0..2. .0..1..1..0. .0..0..1..2. .0..0..1..1. .0..1..2..0
..2..0..1..2. .2..0..2..0. .2..1..2..2. .1..0..2..0. .2..2..0..1
..2..0..0..1. .0..2..2..1. .0..2..1..1. .2..1..1..2. .0..1..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 30 2016
STATUS
approved