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A223794 Number of 7Xn 0..2 arrays with rows, diagonals and antidiagonals unimodal 0
2187, 4782969, 862007289, 27088106846, 377163884938, 3219192158949, 20229461153969, 106414755617907, 508945269335431 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A223789

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A016843 A016891 A016951 * A223980 A223575 A184693

Adjacent sequences:  A223791 A223792 A223793 * A223795 A223796 A223797

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 27 2013

STATUS

approved

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Last modified May 21 10:41 EDT 2022. Contains 353908 sequences. (Running on oeis4.)