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A254427 Number of (6+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
192393, 20251190, 1701224592, 176730239629, 16692762023274, 1673449182032706, 164134852428558128, 16367112523891074046, 1625256311482017610530, 162161419374475253156492, 16172325068209275469916046 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A254422

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A206619 A253522 A254420 * A253373 A204228 A270971

Adjacent sequences:  A254424 A254425 A254426 * A254428 A254429 A254430

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 30 2015

STATUS

approved

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Last modified December 8 20:37 EST 2021. Contains 349596 sequences. (Running on oeis4.)