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

1,1

COMMENTS

Column 2 of A235506

LINKS

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

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: A289455 A202775 A235744 * A120373 A186866 A252571

Adjacent sequences:  A235500 A235501 A235502 * A235504 A235505 A235506

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 11 2014

STATUS

approved

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Last modified January 27 11:44 EST 2021. Contains 340465 sequences. (Running on oeis4.)