OFFSET
1,12
COMMENTS
Table starts
.0...0.....0.......0........0..........0............0..............0
.0...1.....1.......2........5.........16...........45............123
.0...1.....4......13.......59........252.........1074...........4633
.0...2....13......82......549.......3697........25169.........170608
.0...5....59.....549.....6193......67792.......741031........8119416
.0..16...252....3697....67792....1184196.....20734591......364026326
.0..45..1074...25169...741031...20734591....580702029....16327953218
.0.123..4633..170608..8119416..364026326..16327953218...736219004144
.0.340.19933.1156219.88900423.6382316173.458323749120.33124631682770
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..220
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = 2*a(n-1) +a(n-2) +2*a(n-3) +3*a(n-4) +a(n-5) for n>6
k=3: [order 16] for n>18
k=4: [order 54] for n>56
EXAMPLE
Some solutions for n=5 k=4
..0..1..0..1. .0..1..0..1. .0..1..0..1. .0..1..0..0. .0..1..1..1
..1..1..0..1. .1..0..0..0. .1..0..1..0. .1..0..1..1. .1..0..0..0
..0..0..1..0. .0..1..1..1. .0..1..1..1. .0..0..1..0. .1..0..0..1
..1..1..1..1. .1..0..0..0. .1..0..0..0. .1..0..0..1. .0..1..1..0
..0..0..1..0. .0..1..0..1. .0..1..0..1. .1..0..1..0. .0..1..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Aug 10 2018
STATUS
approved