OFFSET
1,1
COMMENTS
Table starts
....2......3........4..........7..........10............15...........24
....4......3........5.........13..........17............35...........90
...10......9.......41........126.........224...........934.........2741
...24.....36......236........773........1800.........16843........54167
...56....139.....1615.......6783.......20717........451318......1543713
..132....532....12356......77955......309657......15616828.....60486552
..312...2111....96171....1009773.....5423164.....730435588...2949336562
..736...8473...761754...14440961...113305157...40083129145.193899487190
.1736..34053..6079503..217830879..2759021846.2390612565177
.4096.136880.48655224.3381893022.75062814060
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..111
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1) +2*a(n-3)
k=2: [order 31]
Empirical for row n:
n=1: a(n)=a(n-2)+2*a(n-3)
n=2: [order 17] for n>18
EXAMPLE
Some solutions for n=4 k=4
..3..3..2..3....3..2..3..2....3..2..3..2....3..3..2..3....3..3..2..3
..2..1..1..0....0..3..2..3....2..1..2..3....2..1..3..2....2..1..1..0
..2..2..0..0....2..0..2..0....0..0..2..0....3..1..2..2....2..2..2..2
..2..0..0..2....0..0..0..3....2..0..2..0....3..2..1..2....2..0..0..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Apr 18 2014
STATUS
approved