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A235668 Number of (4+1)X(n+1) 0..3 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise 1
344668, 97225212, 25779181084, 6040295484562, 1339343216343068, 277976281746083226, 55242119924026366582, 10527964717485738011446, 1940853801717929483432702, 347172878236877263764212860 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A235665

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..24

EXAMPLE

Some solutions for n=1

..0..2....0..3....0..0....0..2....0..2....0..3....0..1....0..3....0..1....0..3

..2..2....3..2....2..0....3..0....3..3....2..2....3..0....3..1....3..3....0..2

..3..2....2..1....1..1....1..0....1..2....1..1....3..3....3..3....0..3....2..2

..2..2....3..1....2..0....2..3....1..3....0..0....0..0....2..1....2..3....0..1

..3..2....3..2....2..1....1..3....1..3....1..0....1..3....1..1....2..1....2..0

CROSSREFS

Sequence in context: A029568 A235746 A235505 * A235664 A235429 A015321

Adjacent sequences:  A235665 A235666 A235667 * A235669 A235670 A235671

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 13 2014

STATUS

approved

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Last modified February 23 05:58 EST 2020. Contains 332159 sequences. (Running on oeis4.)