OFFSET
1,1
COMMENTS
Table starts
......4.........16.............50................144.................422
.....16........204...........1844..............13948..............105862
.....50.......1844..........42084.............737366............12926271
....144......13948.........737366...........27913368..........1058583000
....422.....105862.......12926271.........1058583000.........87389474502
...1268.....850420......245920800........44441926832.......8155057418133
...3823....6953993.....4810332239......1931022884277.....790756782942944
..11472...56279542....92790334588.....82508389421874...75089860262272452
..34350..451637564..1767175335274...3470891253761820.7004416705370946171
.102896.3624058880.33631393265283.145872518046542058
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..97
FORMULA
Empirical for column k:
k=1: a(n) = 4*a(n-1) -6*a(n-2) +10*a(n-3) -5*a(n-4) +6*a(n-5) -a(n-6) +a(n-7)
k=2: [order 25]
EXAMPLE
Some solutions for n=3 k=4
..0..2..2..1..1....2..2..1..0..0....0..2..2..0..0....0..0..2..2..0
..0..2..2..1..0....0..0..0..0..0....0..2..2..0..0....0..0..2..2..0
..1..2..2..2..0....0..0..0..1..1....1..3..3..2..0....0..2..2..3..3
..1..2..2..2..1....2..2..0..3..3....1..3..3..3..0....2..3..3..3..3
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 22 2014
STATUS
approved