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A185842
Number of (n+1)X7 0..2 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace
1
72225, 28276065, 6182861913, 1532963751183, 373447226493477, 91469611366917651, 22396183799936101173, 5482800643934316189987, 1342328585051474225431335, 328632114274707226816589733
OFFSET
1,1
COMMENTS
Column 6 of A185845
LINKS
EXAMPLE
Some solutions for 3X7
..0..2..0..2..2..1..0....0..0..0..0..1..2..2....0..0..0..0..2..1..2
..0..0..0..2..1..1..0....0..0..0..1..1..1..0....0..0..0..2..2..2..1
..0..0..1..1..1..0..0....0..0..0..2..1..1..1....0..0..2..2..2..2..0
CROSSREFS
Sequence in context: A234330 A333684 A187137 * A251348 A254911 A254904
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 05 2011
STATUS
approved