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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A235747

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

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: A281330 A289455 A202775 * A235503 A120373 A186866

Adjacent sequences:  A235741 A235742 A235743 * A235745 A235746 A235747

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 15 2014

STATUS

approved

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Last modified February 28 09:24 EST 2021. Contains 341695 sequences. (Running on oeis4.)