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A219369
Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 nX4 array
1
20, 193, 4544, 82312, 1205110, 15255786, 174413126, 1833703485, 17851830403, 162110334518, 1382147742410, 11129262089553, 85066986799604, 620037528588182, 4327291721344252, 29022486132474116, 187651131559524364
OFFSET
1,1
COMMENTS
Column 4 of A219373
LINKS
EXAMPLE
Some solutions for n=3
..1..1..2..3....1..1..2..2....0..0..3..3....0..0..2..2....0..0..0..0
..1..0..0..2....1..1..1..0....0..1..1..3....0..0..0..3....0..0..0..1
..0..0..0..0....3..1..0..0....2..1..3..3....3..0..3..3....0..2..2..3
CROSSREFS
Sequence in context: A213218 A247742 A355590 * A245137 A232224 A338778
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 19 2012
STATUS
approved