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A253996 Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal median plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
51856, 406183, 3678188, 30663580, 266574705, 2365554897, 20976836853, 183417881138, 1611843610363, 14153919020809, 124080618908089, 1086470007661388, 9513144466402410, 83219752120736303, 727529183808379802 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A253993

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

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

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

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

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

CROSSREFS

Sequence in context: A184454 A003134 A253989 * A258906 A234181 A031679

Adjacent sequences:  A253993 A253994 A253995 * A253997 A253998 A253999

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 21 2015

STATUS

approved

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Last modified May 21 14:53 EDT 2019. Contains 323443 sequences. (Running on oeis4.)