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A235778 Number of (n+1)X(3+1) 0..3 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise 1
23024, 1581879, 101237218, 5639406769, 284827103857, 12969746978427, 542604984360890, 20967636062967018, 756914723702877353, 25670260853234070465, 824040021622030909676, 25151768078055048000358 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A235779

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..34

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A257205 A236039 A116062 * A235558 A104077 A199811

Adjacent sequences:  A235775 A235776 A235777 * A235779 A235780 A235781

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 15 2014

STATUS

approved

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Last modified July 2 21:48 EDT 2022. Contains 355029 sequences. (Running on oeis4.)