A221293 - OEIS

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A221293

Equals two maps: number of 5Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..3 5Xn array

1, 114, 3332, 123958, 4983598, 172905144, 6138441061

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

OFFSET

1,2

COMMENTS

Row 5 of A221290

LINKS

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

EXAMPLE

Some solutions for n=3

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

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