A219304 - OEIS

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A219304

Unchanging value maps: number of n X n binary arrays indicating the locations of corresponding elements unequal to no horizontal or vertical neighbor in a random 0..2 n X n array

1, 6, 90, 3334, 326444, 89981627, 68906619754, 144049729095880

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

OFFSET

1,2

COMMENTS

Diagonal of A219310

LINKS

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

EXAMPLE

Some solutions for n=3

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

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