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A237379 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
1472, 12408, 104248, 912912, 7660840, 64312576, 541081120, 4737777088, 39760171616, 333806884096, 2808515986304, 24588279099648, 206361136896640, 1732616605809664, 14578042664665600, 127611392718380032 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A237384
LINKS
FORMULA
Empirical: a(n) = 10380*a(n-4) -26935616*a(n-8) for n>11
EXAMPLE
Some solutions for n=3
..0..1..0..1....1..0..2..0....0..0..2..1....1..0..2..2....0..1..0..1
..1..1..2..0....0..1..0..2....0..1..1..1....2..2..2..1....1..2..0..1
..0..2..0..2....0..0..1..2....1..2..1..1....1..1..2..1....2..0..2..2
..2..1..1..2....2..2..2..1....0..2..1..2....2..1..0..2....1..1..2..0
CROSSREFS
Sequence in context: A068753 A255735 A252521 * A237144 A187310 A167575
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 07 2014
STATUS
approved

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Last modified May 18 15:59 EDT 2024. Contains 372664 sequences. (Running on oeis4.)