A221477 - OEIS

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A221477

Number of n X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction

0, 4, 50, 34751, 48514602, 1224264741193, 144288378372479004

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

OFFSET

1,2

COMMENTS

Diagonal of A221483

LINKS

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

EXAMPLE

Some solutions for n=3

..0..2..0....0..2..1....0..3..0....0..2..1....1..2..0....0..3..0....0..3..1

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