A205346 - OEIS

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A205346

Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having the same number of equal edges as its horizontal or vertical neighbors, and new values 0..3 introduced in row major order

15, 1750, 1080457, 2423004172, 21200252524407

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

OFFSET

1,1

COMMENTS

Diagonal of A205352

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=4

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

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