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A204627
Number of (n+1)X6 0..2 arrays with every 2X2 subblock having unequal diagonal elements or unequal antidiagonal elements, and new values 0..2 introduced in row major order
1
49152, 19923888, 8077061502, 3274427479938, 1327448018292252, 538145459458960020, 218163372078770313246, 88443107870080810695504, 35854704917808122995732308, 14535444261320212706089532832
OFFSET
1,1
COMMENTS
Column 5 of A204630
LINKS
FORMULA
Empirical: a(n) = 460*a(n-1) -23188*a(n-2) +435694*a(n-3) -3658549*a(n-4) +11358936*a(n-5) +20419834*a(n-6) -191355445*a(n-7) +159553869*a(n-8) +865499344*a(n-9) -1132300188*a(n-10) -1371731191*a(n-11) +1522080017*a(n-12) +5670605*a(n-13) -262860202*a(n-14) +47382216*a(n-15)
EXAMPLE
Some solutions for n=3
..0..0..1..2..0..2....0..0..1..2..0..2....0..0..1..1..2..1....0..0..0..0..1..2
..1..0..2..2..2..1....2..0..2..2..0..1....0..1..1..2..2..2....2..2..1..2..1..1
..2..2..1..2..0..2....2..1..2..1..2..1....1..1..0..0..0..1....1..2..1..1..1..2
..2..0..0..0..0..1....0..2..2..1..1..0....2..1..0..1..2..0....1..0..1..2..1..2
CROSSREFS
Sequence in context: A309100 A236162 A331355 * A079400 A205625 A205360
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 17 2012
STATUS
approved