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A233159 Number of 6Xn 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally or antidiagonally 1
729, 6144, 93312, 1417176, 22692312, 367125912, 5986203912, 97881138720, 1602873102744, 26263615856184, 430448561176896, 7055528832767376, 115652113962870744, 1895759819221508496, 31075287281252187264 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 6 of A233155
LINKS
FORMULA
Empirical: a(n) = 30*a(n-1) -283*a(n-2) +1038*a(n-3) -573*a(n-4) -6705*a(n-5) +21056*a(n-6) -27636*a(n-7) +17216*a(n-8) -4128*a(n-9) for n>15
EXAMPLE
Some solutions for n=3
..0..1..0....2..1..2....2..2..2....0..1..2....0..0..0....2..2..2....0..0..1
..2..1..0....2..2..2....2..2..1....2..2..1....1..0..0....1..2..2....1..2..1
..0..1..0....1..2..2....2..2..2....1..0..0....1..0..1....2..2..2....2..2..1
..0..1..0....1..2..2....2..1..2....0..1..0....1..0..1....2..1..2....1..0..0
..0..0..1....2..1..2....2..2..2....0..1..2....1..2..2....2..2..1....0..0..1
..0..0..0....0..1..0....1..2..2....0..1..2....2..2..1....2..2..2....0..0..1
CROSSREFS
Sequence in context: A017079 A062556 A017163 * A217969 A017379 A067477
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 05 2013
STATUS
approved

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Last modified June 19 13:40 EDT 2024. Contains 373503 sequences. (Running on oeis4.)