OFFSET
1,2
COMMENTS
Table starts
..1....2.....3.......4........6..........9..........13............19
..2....6....11......28.......63........139.........328...........735
..3...11....36.....115......387.......1280........4237.........14026
..4...28...115.....597.....2969......14502.......72069........355733
..6...63...387....2969....21769.....159732.....1181174.......8690359
..9..139..1280...14502...159732....1740403....19142885.....209776696
.13..328..4237...72069..1181174...19142885...313843472....5120370505
.19..735.14026..355733..8690359..209776696..5120370505..124433749976
.28.1684.46454.1758440.64100854.2301194495.83668287300.3028311394674
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..312
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1) +a(n-3)
k=2: a(n) = a(n-1) +2*a(n-2) +2*a(n-3) -a(n-4) +4*a(n-5) -a(n-6) -4*a(n-7) +a(n-9)
k=3: [order 14]
k=4: [order 49]
EXAMPLE
Some solutions for n=5 k=4
..0..0..1..0. .0..0..0..0. .1..1..0..0. .0..1..1..0. .0..1..0..0
..0..0..1..0. .0..0..0..0. .0..0..0..0. .0..0..0..0. .0..1..1..0
..1..1..1..1. .0..1..0..1. .0..1..0..0. .0..0..0..0. .0..1..1..1
..0..0..0..0. .0..1..0..1. .0..1..1..0. .0..1..1..0. .0..0..0..0
..1..1..0..0. .0..0..0..0. .0..1..1..1. .0..0..0..0. .0..0..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 11 2017
STATUS
approved