OFFSET
1,4
COMMENTS
Table starts
.0.....1.......2.........5.........10...........20.............38
.0.....4.......8........36.........88..........272............696
.0....15......46.......305.......1078.........4948..........18210
.0....48.....224......2136......10976........73568.........390064
.0...145....1066.....14240.....109058......1049588........8134304
.0...420....4952.....91048....1053432.....14382480......164351184
.0..1183...22654....566656...10002542....192100836.....3258530608
.0..3264..102416...3456320...93733440...2516546784....63679868768
.0..8865..458674..20760192..869397882..32481770852..1230707111424
.0.23780.2038328.123186784.7996744280.414339126768.23573013881888
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..721
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = 4*a(n-1) -2*a(n-2) -4*a(n-3) -a(n-4)
k=3: a(n) = 10*a(n-1) -31*a(n-2) +24*a(n-3) +21*a(n-4) -18*a(n-5) -9*a(n-6)
k=4: a(n) = 12*a(n-1) -40*a(n-2) +8*a(n-3) +92*a(n-4) -32*a(n-5) -64*a(n-6) for n>7
k=5: [order 12]
k=6: [order 14]
k=7: [order 24] for n>25
Empirical for row n:
n=1: a(n) = 2*a(n-1) +a(n-2) -2*a(n-3) -a(n-4)
n=2: a(n) = 2*a(n-1) +5*a(n-2) -6*a(n-3) -9*a(n-4)
n=3: a(n) = 4*a(n-1) +8*a(n-2) -34*a(n-3) -16*a(n-4) +60*a(n-5) -25*a(n-6)
n=4: [order 8]
n=5: [order 14]
n=6: [order 20]
n=7: [order 32]
EXAMPLE
Some solutions for n=4 k=4
..1..1..0..0. .0..0..1..0. .1..0..1..1. .0..1..0..0. .0..0..0..0
..0..0..0..1. .0..0..1..0. .1..0..0..0. .0..0..1..0. .1..0..0..0
..0..0..0..0. .1..0..0..0. .1..0..0..1. .0..0..1..0. .0..1..0..0
..0..1..0..1. .0..0..1..1. .0..0..0..0. .0..0..0..0. .0..1..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 17 2016
STATUS
approved