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A204778 Number of (n+2)X6 0..2 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..2 introduced in row major order 1
25190406, 8643947616, 2890032532056, 966430412947296, 323760110018338584, 108409087458981913446, 36302705908249227882336, 12156529288557135619738464, 4070799905213442743056301814 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A204782

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..31

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A206084 A187439 A175580 * A172795 A056915 A233448

Adjacent sequences:  A204775 A204776 A204777 * A204779 A204780 A204781

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 19 2012

STATUS

approved

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Last modified October 19 09:36 EDT 2021. Contains 348074 sequences. (Running on oeis4.)