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A235503
Number of (n+1)X(2+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise
1
2982, 108648, 3945383, 123132965, 3714091695, 103423011021, 2793351835442, 72239093710651, 1829055476890911, 45202879299137156, 1102383964087038967, 26524099399460940827, 633214304285732248830, 15005899959785143753881
OFFSET
1,1
COMMENTS
Column 2 of A235506
LINKS
EXAMPLE
Some solutions for n=2
..3..0..3....3..0..2....1..3..1....1..0..1....0..1..2....0..1..3....0..3..3
..1..3..3....1..2..3....0..3..0....3..0..3....0..2..3....3..1..1....3..3..2
..0..2..3....3..1..1....3..3..0....0..0..2....1..2..3....2..3..2....3..1..0
CROSSREFS
Sequence in context: A360666 A202775 A235744 * A120373 A365258 A186866
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 11 2014
STATUS
approved