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A237327 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
1264, 8588, 58296, 414268, 2870224, 19874388, 137663582, 978134492, 6780688008, 46959680920, 325344257654, 2311691261008, 16025622824382, 110986965737552, 768943917811452, 5463623395524888, 37876242151447786, 262316002867523352 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A237332

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

..2..1..1..1....0..2..1..1....1..2..2..0....2..0..2..1....2..0..1..1

..1..2..1..1....0..2..2..2....1..2..1..1....1..2..2..0....2..2..2..0

..2..0..1..2....1..2..2..1....0..2..1..2....2..1..2..0....2..1..1..2

..0..2..0..1....0..1..2..1....1..1..1..2....0..2..1..2....1..0..1..2

CROSSREFS

Sequence in context: A205762 A331824 A234676 * A233887 A234147 A252562

Adjacent sequences:  A237324 A237325 A237326 * A237328 A237329 A237330

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 06 2014

STATUS

approved

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Last modified September 27 06:29 EDT 2022. Contains 357052 sequences. (Running on oeis4.)