OFFSET
1,1
COMMENTS
Table starts
..2...3.....4.......5.........6...........7...........8...........9..........10
..3...7....15......30........56..........98.........162.........255.........385
..4..15....54.....185.......587........1704........4532.......11126.......25430
..5..30...185....1104......6160.......31073......141192......581706.....2192737
..6..56...587....6160.....61127......550010.....4450124....32473856...215116595
..7..98..1704...31073....550010.....8988949...133142369..1779353333.21501389691
..8.162..4532..141192...4450124...133142369..3657501287.91016881301
..9.255.11126..581706..32473856..1779353333.91016881301
.10.385.25430.2192737.215116595.21501389691
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..111
FORMULA
Empirical for column k:
k=1: a(n) = n + 1
k=2: a(n) = (1/24)*n^4 + (1/12)*n^3 + (11/24)*n^2 + (17/12)*n + 1
k=3: [polynomial of degree 9] for n>3
k=4: [polynomial of degree 19] for n>7
k=5: [polynomial of degree 39] for n>22
EXAMPLE
Some solutions for n=4 k=4
..1..0..0..0....0..0..0..1....1..0..0..0....0..0..1..0....0..0..1..0
..0..0..1..0....1..0..0..0....0..0..1..0....0..1..0..1....0..1..0..0
..0..0..1..1....0..0..0..0....0..0..1..0....1..0..1..1....1..0..1..0
..0..0..1..1....0..0..0..1....0..0..0..0....0..1..0..1....0..1..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jul 09 2013
STATUS
approved