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A237571
Number of (n+1)X(3+1) 0..3 arrays with the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
2
13924, 315664, 7379204, 173478980, 4093774632, 95639726868, 2255748816966, 52746091216472, 1244121688354740, 29088796774026344, 686098112079186338, 16041540535482336896, 378367591142818627910, 8846617965689182153740
OFFSET
1,1
COMMENTS
Column 3 of A237574
LINKS
EXAMPLE
Some solutions for n=1
..2..1..1..1....2..3..2..1....0..0..1..1....2..1..1..2....1..0..1..1
..2..2..2..1....0..2..3..2....2..0..1..0....3..0..2..0....1..3..0..1
CROSSREFS
Sequence in context: A190817 A298428 A252557 * A244273 A118464 A031666
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 09 2014
STATUS
approved