A218758 - OEIS

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A218758

Unmatched value maps: number of n X n binary arrays indicating the locations of corresponding elements not equal to any horizontal or vertical neighbor in a random 0..1 n X n array

1, 6, 90, 2942, 280850, 70915451, 48186998294, 87678602579068

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Diagonal of A218765

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=3

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

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