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A254428 Number of (7+1)X(n+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
876277, 189197280, 27127649888, 5319044439319, 894001153490556, 164418838931876650, 29011762459538515234, 5247595940683112951878, 938963349063508187379376, 169141748781750276644640886 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A254422

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..162

EXAMPLE

Some solutions for n=1

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

..0..0....0..1....0..0....0..1....0..1....0..0....0..0....0..0....0..0....0..0

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

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

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

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

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

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

CROSSREFS

Sequence in context: A271263 A253523 A254421 * A271264 A224595 A254387

Adjacent sequences:  A254425 A254426 A254427 * A254429 A254430 A254431

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 30 2015

STATUS

approved

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Last modified August 6 15:34 EDT 2020. Contains 336252 sequences. (Running on oeis4.)