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A235953
Number of (n+1)X(7+1) 0..2 arrays colored with the upper median value of each 2X2 subblock
1
58896, 18468, 4884, 7320, 9260, 14440, 21288, 29328, 41748, 57760, 83202, 117312, 164264, 231040, 333776, 469248, 657056, 924160, 1335104, 1876992, 2628224, 3696640, 5340416, 7507968, 10512896, 14786560, 21361664, 30031872, 42051584
OFFSET
1,1
COMMENTS
Column 7 of A235954
LINKS
FORMULA
Empirical: a(n) = 4*a(n-4) for n>15
EXAMPLE
Some solutions for n=5
..1..2..1..0..0..2..0..0....2..0..1..2..0..0..0..2....1..0..1..2..1..0..2..1
..0..0..2..1..0..1..2..0....0..0..2..1..0..1..2..1....2..0..0..0..2..0..0..0
..1..0..1..2..0..0..0..2....1..2..0..0..0..2..0..0....1..2..1..0..1..2..1..0
..2..0..0..0..2..1..0..1....2..1..0..1..2..1..0..1....0..0..2..0..0..0..2..0
..1..2..1..0..1..2..0..0....0..0..0..2..0..0..0..2....2..0..1..2..1..0..1..2
..1..1..2..0..0..1..2..1....0..1..2..1..0..1..2..0....2..0..0..1..2..0..0..0
CROSSREFS
Sequence in context: A157131 A217603 A205233 * A343374 A359310 A321826
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 17 2014
STATUS
approved