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A224167
Number of n X n 0..3 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.
1
4, 100, 4739, 272130, 16625026, 1038484760, 65713691148, 4209750150062, 273303096405547
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..9.
EXAMPLE
Some solutions for n=3:
..0..1..0....0..0..0....0..3..2....2..0..0....0..0..1....0..0..2....0..0..1
..2..1..1....0..2..0....0..3..2....2..0..0....0..2..2....0..1..3....1..2..3
..3..3..2....2..2..0....1..3..2....2..3..0....1..2..3....0..3..3....2..3..3
CROSSREFS
Diagonal of A224173.
Sequence in context: A165518 A127776 A266524 * A223858 A223981 A224385
Adjacent sequences: A224164 A224165 A224166 * A224168 A224169 A224170
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Mar 31 2013
EXTENSIONS
Name corrected by Andrew Howroyd, Mar 18 2025
STATUS
approved

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Last modified April 12 18:40 EDT 2026. Contains 394620 sequences.
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