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A223880 Number of 6Xn 0..3 arrays with rows, diagonals and antidiagonals unimodal 0
4096, 16777216, 6066668157, 411716468431, 12351748855245, 222723966999899, 2864914204785815, 29313435510121943, 256460553486002269, 2005690447094149401 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A223876

LINKS

Table of n, a(n) for n=1..10.

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

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

..2..2..3....1..2..1....1..2..2....1..2..1....3..0..0....2..2..0....0..0..3

..2..3..1....0..3..3....1..3..2....2..1..1....2..0..0....0..2..2....0..1..2

..0..3..3....0..1..3....0..2..2....0..0..0....2..3..0....0..3..1....1..2..2

CROSSREFS

Sequence in context: A223356 A017574 A016752 * A223805 A223583 A222143

Adjacent sequences:  A223877 A223878 A223879 * A223881 A223882 A223883

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 28 2013

STATUS

approved

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Last modified January 23 13:57 EST 2022. Contains 350511 sequences. (Running on oeis4.)