OFFSET
1,1
COMMENTS
Table starts
......24........90..........324...........1188.............4320
......90.......534.........3004..........17424............99380
.....324......3004........26192.........238570..........2118568
....1188.....17424.......238570........3455622.........48384788
....4320.....99380......2118568.......48384788.......1060656512
...15768....572192.....19123682......694104494......24003655980
...57456...3277236....170872144.....9797170648.....531400908604
..209520..18825580...1536664586...139850230232...11957878063196
..763776.107963840..13763062452..1981047775126..265950544067684
.2784672.619734876.123586823454.28211321138046.5965795563741028
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..312
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1) +6*a(n-2)
k=2: a(n) = 6*a(n-1) +9*a(n-2) -67*a(n-3) +26*a(n-4) +81*a(n-5) -48*a(n-6) +2*a(n-7)
k=3: [order 13]
k=4: [order 31]
k=5: [order 66]
EXAMPLE
Some solutions for n=3 k=4
..0..0..0..1..1....2..1..2..2..2....1..0..1..0..0....1..1..1..1..1
..0..1..1..1..0....1..1..1..1..1....1..0..1..0..1....0..0..1..2..1
..1..1..0..1..0....0..0..0..0..0....0..0..1..1..1....1..1..1..1..1
..0..1..0..1..0....0..1..1..0..1....1..0..0..1..2....1..2..2..2..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 14 2013
STATUS
approved