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A235504 Number of (n+1)X(3+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise 1
33640, 3945383, 490074558, 51929974331, 5302813444717, 486511569699939, 42291681755835352, 3427953232697851324, 265272758284291968338, 19577770025610345890094, 1394126518359017147630547 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A235506

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..143

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A235428 A178280 A235745 * A297127 A234187 A209827

Adjacent sequences:  A235501 A235502 A235503 * A235505 A235506 A235507

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 11 2014

STATUS

approved

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