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A205064 Number of (n+1) X (n+1) 0..1 arrays with the number of rightwards and downwards edge increases in each 2 X 2 subblock differing from the number in all its horizontal and vertical neighbors. 0
16, 64, 144, 376, 856, 1984, 4480, 9856, 22144, 47104, 105472, 219136, 489472, 999424, 2228224, 4489216, 9994240, 19922944, 44302336, 87556096, 194510848, 381681664, 847249408, 1652555776, 3665821696 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=4:
..0..1..0..0..0....1..0..1..0..0....0..1..0..1..1....0..1..0..1..1
..0..0..1..0..0....1..1..1..1..1....1..1..1..0..1....0..0..0..0..0
..0..0..0..1..0....1..0..1..0..1....0..1..1..1..0....0..1..0..1..0
..1..0..0..0..0....1..1..1..1..1....1..0..1..1..1....0..0..0..0..0
..0..1..0..0..1....0..0..1..0..1....1..1..0..1..0....0..1..0..1..0
CROSSREFS
Diagonal of A205072.
Sequence in context: A277016 A016802 A309573 * A102860 A136264 A266103
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Jan 21 2012
STATUS
approved

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Last modified February 29 17:53 EST 2024. Contains 370428 sequences. (Running on oeis4.)