OFFSET
1,5
COMMENTS
Table starts
..0.....1........1..........2.............3...............5.................8
..1.....4.......18.........64...........236.............888..............3336
..1....18......130........876..........6025...........41528............285931
..2....64......876......10692........136106.........1736688..........22129704
..3...236.....6025.....136106.......3216110........76033854........1795186406
..5...888....41528....1736688......76033854......3330673422......145700454710
..8..3336...285931...22129704....1795186406....145700454710....11808073517522
.13.12512..1968966..281996650...42387096961...6374113851083...957054636207245
.21.46928.13558267.3593547434.1000847932823.278862313827105.77572170112847769
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..180
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1) +a(n-2)
k=2: a(n) = 4*a(n-1) -2*a(n-2) +4*a(n-3) for n>4
k=3: [order 10] for n>11
k=4: [order 31] for n>32
EXAMPLE
Some solutions for n=5 k=4
..0..0..0..1. .0..1..0..0. .0..0..0..0. .0..0..1..1. .0..0..0..0
..0..0..0..1. .0..1..1..1. .0..0..0..0. .1..1..1..0. .0..0..0..0
..0..0..0..1. .1..0..0..0. .0..0..0..0. .0..0..0..1. .0..0..0..0
..1..1..1..0. .1..0..0..0. .1..1..1..1. .0..0..0..1. .1..1..1..1
..0..0..0..1. .1..0..0..0. .1..1..0..0. .0..0..0..1. .1..0..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 08 2018
STATUS
approved