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A201231
Number of nX4 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other
1
3, 24, 140, 1028, 7791, 66027, 508368, 4293464, 33177954, 282310785, 2226471492, 18845872240, 149352193586, 1252800269866, 9919439949887, 82782378005253, 656171911832714, 5446960364973500, 43213785216715427, 357463895275500826
OFFSET
1,1
COMMENTS
Column 4 of A201235
LINKS
EXAMPLE
Some solutions for n=6
..0..0..0..0....0..0..0..1....0..0..0..1....0..0..0..0....0..0..0..0
..0..1..2..1....0..1..1..1....0..0..0..2....0..1..1..1....0..0..3..1
..0..1..2..3....0..3..3..2....1..1..1..2....0..3..2..3....2..2..2..3
..1..1..3..2....0..3..2..2....1..3..2..3....1..3..2..2....1..2..3..2
..3..3..3..3....1..3..2..2....1..2..3..2....1..3..2..2....1..1..3..2
..1..2..2..2....1..3..2..3....2..3..3..3....1..3..2..3....1..1..3..3
CROSSREFS
Sequence in context: A215636 A056350 A056344 * A212698 A226511 A125651
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 28 2011
STATUS
approved