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A235744
Number of (n+1)X(2+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise
1
2982, 103106, 3493283, 102505743, 2937817702, 78357821891, 2048901015407, 51582880207651, 1280585994429075, 31146056902464824, 750829114676769986, 17900362458855209223, 424545394570941211292, 10009989668346734288085
OFFSET
1,1
COMMENTS
Column 2 of A235747
LINKS
EXAMPLE
Some solutions for n=2
..2..3..3....0..3..1....0..0..0....2..0..2....3..1..3....1..1..1....1..1..2
..1..0..3....1..1..2....2..2..1....2..0..2....3..3..1....1..2..1....0..0..0
..2..2..1....2..0..0....0..0..2....1..0..1....3..0..3....1..0..2....1..1..0
CROSSREFS
Sequence in context: A289455 A360666 A202775 * A235503 A120373 A365258
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 15 2014
STATUS
approved