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A197216
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,1,0 for x=0,1,2,3,4.
1
1, 73, 1537, 30940, 706153, 15034832, 322715244, 6984694296, 150562726618, 3245505223710, 70004837612015, 1509763068769076, 32557618945328577, 702121520920633674, 15141824337674655027, 326544294704293876446
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OFFSET
1,2
COMMENTS
Every 0 is next to 0 4's, every 1 is next to 1 3's, every 2 is next to 2 2's, every 3 is next to 3 1's, every 4 is next to 4 0's
Column 7 of
A197217
LINKS
R. H. Hardin,
Table of n, a(n) for n = 1..188
EXAMPLE
Some solutions for n=4
..0..0..1..0..0..1..0....0..2..2..1..3..1..0....0..0..0..0..0..0..0
..1..1..3..1..1..3..1....0..2..2..0..1..0..1....2..2..0..1..3..1..0
..3..1..0..0..1..0..0....0..1..3..1..1..1..3....2..2..1..0..1..0..0
..1..0..0..1..3..1..0....0..0..1..1..3..1..1....0..1..3..1..0..0..0
CROSSREFS
Sequence in context:
A253263
A098676
A056214
*
A197502
A197241
A332948
Adjacent sequences:
A197213
A197214
A197215
*
A197217
A197218
A197219
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Oct 11 2011
STATUS
approved
