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A253877 Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
21426176, 1689797632, 111370158592, 8407169495552, 580087707480832, 40954149283756544, 2875255935248467200, 201829672443656315648, 14124070170784841294080, 989446756729598826020096 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A253871

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..38

EXAMPLE

Some solutions for n=1

..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A206108 A034613 A253870 * A253543 A250912 A251998

Adjacent sequences:  A253874 A253875 A253876 * A253878 A253879 A253880

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 17 2015

STATUS

approved

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Last modified June 17 06:06 EDT 2019. Contains 324183 sequences. (Running on oeis4.)