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A220799
Agreement numbers: number of nX4 arrays of the count of horizontal and vertical neighbors equal to the corresponding element in a random 0..2 nX4 array.
0
8, 388, 20578, 1081347, 56854180, 2987139118, 156943511836
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OFFSET
1,1
COMMENTS
Column 4 of
A220800
LINKS
Table of n, a(n) for n=1..7.
EXAMPLE
Some solutions for n=3
..0..0..2..2....1..2..1..1....1..3..3..1....0..2..2..1....0..1..1..0
..0..1..2..2....0..1..0..0....0..2..2..0....0..2..1..2....0..1..1..0
..0..1..1..1....1..1..1..1....0..0..1..1....0..2..1..1....1..2..2..1
CROSSREFS
Sequence in context:
A042115
A159515
A369770
*
A220785
A385408
A203368
Adjacent sequences:
A220796
A220797
A220798
*
A220800
A220801
A220802
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Dec 21 2012
STATUS
approved
