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A253727 Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally and vertically 1
3550, 83884, 2240030, 57696638, 1480378584, 37974926408, 973419692344, 24954361428316, 639722018395542, 16399618381462986, 420413253006099542, 10777534399917205716, 276288152540512284466, 7082802871534880299076 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A253731
LINKS
EXAMPLE
Some solutions for n=2
..1..1..2..0....2..0..2..2....0..0..0..1....2..2..0..0....0..0..1..1
..0..1..0..1....1..1..1..2....0..1..0..2....2..0..2..0....1..1..2..0
..2..0..1..0....2..1..1..0....1..0..1..1....1..1..0..1....1..2..0..0
CROSSREFS
Sequence in context: A253309 A253657 A251040 * A218815 A248855 A151810
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 10 2015
STATUS
approved

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Last modified February 27 06:17 EST 2024. Contains 370362 sequences. (Running on oeis4.)