OFFSET
1,2
COMMENTS
Table starts
...1.......3..........7............15...............33...................73
...3......51........381..........3015............24651...............198945
...7.....381.......8227........187989..........4423815............103104905
..15....3015.....187989......12521603........865692227..........59192688269
..33...24651....4423815.....865692227.....176788379233.......35630507175345
..73..198945..103104905...59192688269...35630507175345....21136983701111465
.161.1607067.2403848151.4047993038079.7183387830867849.12543745301001506913
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..180
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1) +a(n-3)
k=2: a(n) = 6*a(n-1) +12*a(n-2) +39*a(n-3)
k=3: [order 9]
k=4: [order 15]
k=5: [order 46]
EXAMPLE
Some solutions for n=3 k=4
..1..0..1..1....0..1..1..2....1..2..2..1....0..2..0..2....1..1..0..2
..1..2..2..1....0..2..0..2....1..1..1..2....2..1..0..1....2..1..1..2
..2..2..2..2....2..2..1..1....2..1..2..2....2..0..2..1....1..0..1..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 24 2013
STATUS
approved