OFFSET
1,1
COMMENTS
Table starts
...108..274..783.1758.5263.14141.29731.93809.248919.573623.1749927.4584571
...274..622..865..193..539...735..1883..5187..12715..34507...94379..254955
...783..865..128..256..334...778..1990..4758..12782..34702...93502..255070
..1758..193..256..244..442...982..1914..4922..13138..34498...93778..255730
..5263..539..334..442..736...996..2168..5368..13024..34864...94528..255360
.14141..735..778..982..996..1496..2860..5500..13636..35860...94404..256196
.29731.1883.1990.1914.2168..2860..3664..6784..15304..36408...95912..258472
.93809.5187.4758.4922.5368..5500..6784.10288..17688..39752..100024..260344
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..337
FORMULA
Empirical for column k:
k=1: a(n) = 4*a(n-1) -3*a(n-2) +10*a(n-3) -44*a(n-4) +60*a(n-5) -30*a(n-6) -172*a(n-7) -152*a(n-8) +1224*a(n-9) -448*a(n-10) -656*a(n-11) +880*a(n-12) -2592*a(n-13) +2688*a(n-14) -768*a(n-15) for n>16
k=2: a(n) = 3*a(n-1) -6*a(n-4) +4*a(n-6) for n>9
k=3..7: a(n) = 3*a(n-1) -6*a(n-4) +4*a(n-6) for n>8
EXAMPLE
Some solutions for n=4 k=3
..0..0..0..0..0....0..0..0..0..0....0..0..0..1..2....0..0..0..0..0
..0..0..0..0..0....1..1..1..1..1....2..0..0..0..1....0..0..0..0..0
..1..1..1..1..1....0..0..0..0..0....2..2..0..0..0....1..1..1..1..1
..0..0..0..0..0....0..0..0..0..0....2..2..2..0..0....0..0..0..0..0
..2..2..2..2..2....1..1..1..1..1....0..2..2..2..0....1..1..1..1..1
..2..2..2..2..2....0..0..0..0..0....0..1..2..2..2....2..2..2..2..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 13 2012
STATUS
approved