OFFSET
1,1
COMMENTS
Table starts
.....4........6.........16...........39..............81...............168
.....9.......32........121..........406............1225..............3916
....25......156.......1024.........5778...........28900............155496
....64......800.......8464........80511..........674041...........6257919
...169.....4000......70225......1129755........15594601.........245403000
...441....20228.....582169.....15851094.......362293156........9716967198
..1156...101808....4826809....222394359......8404672329......383555570610
..3025...513400...40018276...3120433160....195072388900....15154710590391
..7921..2586980..331786225..43782113196...4526898777801...598600429698510
.20736.13039568.2750792704.614302069661.105058031047524.23646568415709520
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..418
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1) +2*a(n-2) -a(n-3)
k=2: a(n) = 3*a(n-1) +12*a(n-2) -5*a(n-3) -19*a(n-4) +2*a(n-5) +4*a(n-6)
k=3: a(n) = 9*a(n-1) -3*a(n-2) -25*a(n-3) +9*a(n-4) +3*a(n-5) -a(n-6)
k=4: [order 14]
k=5: [order 36]
k=6: [order 90] for n>91
Empirical for row n:
n=1: a(n) = a(n-1) +3*a(n-3) +3*a(n-4) +3*a(n-5) +3*a(n-6) -2*a(n-8) -a(n-9)
n=2: [order 15]
n=3: [order 36] for n>38
EXAMPLE
Some solutions for n=4 k=4
..0..0..0..1..1....1..0..0..1..1....0..0..1..0..0....1..0..0..0..0
..0..0..0..0..1....0..0..0..0..0....0..0..0..1..1....0..0..0..0..0
..0..1..0..1..0....0..1..1..0..1....1..0..0..0..0....0..1..0..0..0
..1..0..1..0..0....0..0..0..1..1....1..0..1..1..0....0..0..0..1..0
..0..1..0..0..1....1..0..0..0..0....0..0..0..0..1....1..0..0..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 16 2013
STATUS
approved