OFFSET
1,1
COMMENTS
Table starts
.....9.....22.......52.......125........297..........710..........1691
....22.....71......219.......701.......2193.........6980.........21966
....52....219......822......3390......12954........52474........202882
...125....701.....3390.....18924......94706.......518711.......2645966
...297...2193....12954.....94706.....577942......4109933......25654154
...710...6980....52474....518711....4109933.....39473392.....322933003
..1691..21966...202882...2645966...25654154....322933003....3232216177
..4036..69681...813336..14292754..178853600...3029148345...39571705178
..9621.219860..3168621..73763850.1134888362..25329125380..405845538185
.22951.696284.12623928.394839392.7800498387.233446638426.4863503527792
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..544
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1) +2*a(n-2) -3*a(n-3) +a(n-4)
k=2: a(n) = 2*a(n-1) +7*a(n-2) -9*a(n-3) -7*a(n-4) +7*a(n-5) for n>6
k=3: [order 11]
k=4: [order 19]
k=5: [order 33] for n>34
k=6: [order 58] for n>59
EXAMPLE
Some solutions for n=4 k=4
..0..0..0..0..0....1..1..1..1..1....0..1..0..0..0....1..0..0..0..0
..1..1..0..1..1....0..0..0..0..0....0..0..1..0..1....0..1..1..1..1
..0..0..0..0..0....1..0..1..1..0....1..0..1..0..1....0..0..0..0..0
..0..1..0..1..1....1..0..0..0..1....1..0..0..0..1....1..1..0..1..0
..0..1..0..0..0....0..1..1..0..0....1..0..1..0..0....0..0..0..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 01 2014
STATUS
approved