OFFSET
1,12
COMMENTS
Table starts
.1...1...1...1....1......1.......1........1..........1...........1............1
.1...1...1...2....5......9......22.......45........101.........218..........477
.1...1...9...5...16.....31......28.......87........125.........185..........418
.1...2...5...4...13.....31......83......262........819........2690.........8887
.1...5..16..13...65....233.....441.....1765.......7431.......28212.......121244
.1...9..31..31..233...1112....4620....29589.....169601.....1004366......6170528
.1..22..28..83..441...4620...26343...240692....2382399....22651784....228684042
.1..45..87.262.1765..29589..240692..3833927...54266663...764702068..11301659452
.1.101.125.819.7431.169601.2382399.54266663.1239155011.27405626123.629168904793
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..219
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = a(n-1) +3*a(n-2) -2*a(n-4) for n>5
k=3: [order 9] for n>13
k=4: [order 34]
EXAMPLE
Some solutions for n=5 k=4
..0..0..1..1. .0..1..1..0. .0..0..0..0. .0..0..1..1. .0..0..0..0
..0..0..1..1. .1..1..1..1. .0..0..0..0. .0..0..1..1. .0..0..0..0
..1..0..1..1. .1..1..1..1. .1..1..1..1. .0..1..1..0. .0..1..0..0
..0..0..1..1. .0..0..0..0. .1..1..1..1. .0..0..1..1. .0..0..0..0
..0..0..1..1. .0..0..0..0. .0..1..1..0. .0..0..1..1. .0..0..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 22 2018
STATUS
approved