OFFSET
1,5
COMMENTS
Table starts
.0....0......0........0..........0............0...............0
.0....3......5.......18.........61..........209.............702
.0....5.....14.......73........387.........2000...........10487
.0...18.....73......769.......6742........62314..........570806
.0...61....387.....6742.....101803......1591947........24891152
.0..209...2000....62314....1591947.....43037698......1155724711
.0..702..10487...570806...24891152...1155724711.....53245963290
.0.2381..54957..5242925..389069291..31086640568...2457712512055
.0.8069.287218.48153854.6084616648.836374058655.113464874364839
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);
k=2: a(n) = 3*a(n-1) +a(n-2) +2*a(n-3) -2*a(n-4) -4*a(n-5) for n>6;
k=3: [order 15] for n>16;
k=4: [order 42] for n>44.
EXAMPLE
Some solutions for n=5, k=4
..0..1..0..0. .0..1..0..0. .0..1..1..1. .0..0..0..1. .0..1..1..0
..1..1..1..1. .1..1..1..1. .0..1..0..0. .1..1..0..1. .1..0..0..1
..0..0..1..0. .0..1..0..0. .1..1..0..0. .0..1..1..0. .0..0..0..1
..0..0..1..1. .1..0..0..0. .0..1..1..1. .0..0..1..0. .0..1..1..0
..1..1..0..0. .1..0..1..1. .1..0..0..0. .1..0..1..0. .1..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jul 10 2018
STATUS
approved