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A231434 Number of (n+2)X(n+2) 0..3 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..3 introduced in row major order 0
1, 4, 21, 182, 4450, 133646, 7859324 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A231441

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A306067 A230682 A231220 * A221370 A224500 A158108

Adjacent sequences:  A231431 A231432 A231433 * A231435 A231436 A231437

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 09 2013

STATUS

approved

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Last modified May 12 07:28 EDT 2021. Contains 343821 sequences. (Running on oeis4.)