OFFSET
1,1
COMMENTS
Table starts
.....5.......13.........32...........79.............200................500
....13.......61........252.........1120............5294..............23965
....32......252.......1699........12044...........92380.............678081
....79.....1120......12044.......157633.........2192216...........28305214
...200.....5294......92380......2192216........55365917.........1260742591
...500....23965.....678081.....28305214......1260742591........49517022951
..1249...107961....4939746....366087332.....28958572406......1970546390784
..3133...492274...36427030...4826593439....681634049374.....80724891499437
..7845..2241508..268422913..63283320895..15907022844385...3270901271636533
.19640.10179136.1972567930.827033366868.369796154636660.131957283104436587
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..220
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1) +2*a(n-2) +5*a(n-3) -2*a(n-5) -4*a(n-6)
k=2: [order 20]
k=3: [order 45]
EXAMPLE
Some solutions for n=4 k=4
..0..0..1..0..1....0..0..1..0..0....0..0..0..1..0....0..1..0..1..0
..0..1..0..0..0....1..0..0..0..0....0..1..0..0..0....0..0..0..0..0
..1..0..0..0..1....1..0..0..1..1....0..1..1..0..0....0..0..0..0..0
..1..0..0..0..1....0..1..0..0..0....0..0..1..0..1....0..1..0..0..1
..0..0..0..0..1....0..0..1..0..0....0..0..0..0..0....1..0..0..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 13 2013
STATUS
approved