OFFSET
1,5
COMMENTS
Table starts
.1.....1......1........1..........1.............1...............1
.1.....5.....13.......42........127...........389............1192
.1....13.....31......156........614..........2800...........13379
.1....42....156.....1308.......9682.........77981..........667784
.1...127....614.....9682.....135586.......2025352........32244900
.1...389...2800....77981....2025352......55414033......1611352289
.1..1192..13379...667784...32244900....1611352289.....85265831295
.1..3645..63697..5725192..510265485...46538050960...4488446180581
.1.11161.313055.49894988.8185592982.1360698390084.238899914350593
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) = a(n-1) +5*a(n-2) +4*a(n-3)
k=3: [order 13] for n>15
k=4: [order 49] for n>51
EXAMPLE
Some solutions for n=5 k=4
..0..1..0..0. .0..0..1..0. .0..1..1..1. .0..0..0..0. .0..0..0..0
..1..1..0..1. .1..0..1..1. .0..0..1..1. .0..1..0..0. .0..1..0..0
..0..0..1..1. .0..0..1..0. .1..0..0..1. .1..1..1..0. .0..1..1..0
..0..0..0..0. .1..1..0..0. .0..0..1..1. .0..1..0..0. .0..0..0..0
..1..0..1..0. .1..1..1..0. .0..1..1..0. .0..0..0..1. .1..0..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 21 2018
STATUS
approved