OFFSET
1,5
COMMENTS
Table starts
.1...1...1....1......1.......1........1.........1..........1............1
.1...3...2...10.....13......42.......74.......188........387..........885
.1...2...4...11......8......58......131.......306........936.........2435
.1..10..11...26.....80.....237......692......2548.......8240........26808
.1..13...8...80....389....1351.....6577.....29663.....128834.......599170
.1..42..58..237...1351....8839....53367....330577....2105279.....13511213
.1..74.131..692...6577...53367...481311...4070089...36505624....319929622
.1.188.306.2548..29663..330577..4070089..47968011..590197943...7181318177
.1.387.936.8240.128834.2105279.36505624.590197943.9905247305.168928472097
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..238
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = 4*a(n-2) +2*a(n-3) +a(n-5) -3*a(n-6) +a(n-7)
k=3: [order 23] for n>25
k=4: [order 80] for n>82
EXAMPLE
Some solutions for n=5 k=4
..0..0..1..0. .0..0..1..1. .0..1..1..0. .0..1..0..0. .0..0..1..1
..0..0..0..0. .0..1..0..1. .1..1..0..0. .1..1..0..1. .0..1..0..1
..1..1..1..1. .1..0..0..1. .0..0..1..1. .0..0..1..1. .0..1..1..0
..1..0..1..0. .1..1..1..0. .0..1..0..1. .0..1..0..0. .0..0..1..1
..1..1..0..0. .0..1..0..0. .1..1..1..1. .1..1..0..0. .0..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Mar 04 2018
STATUS
approved