A236487 - OEIS

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A236487

Number of (n+1)X(3+1) 0..2 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise

3987, 156087, 5674353, 192685833, 6319589033, 202321147069, 6387140371741, 199871719030679, 6222081902405325, 193092447435407581, 5981381971815706217, 185086424146409277705, 5723743600836497300987, 176942500068966160759075

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

OFFSET

1,1

COMMENTS

Column 3 of A236490

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A159218 A159216 A236492 * A235434 A200848 A235739

Adjacent sequences: A236484 A236485 A236486 * A236488 A236489 A236490

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 27 2014

STATUS

approved