A204622 - OEIS

A204622

Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having unequal diagonal elements or unequal antidiagonal elements, and new values 0..2 introduced in row major order

12, 2049, 2490558, 21550390395, 1327448018292252, 582081449451902347866, 1816995451072561641887723586, 40376415985445663379679403072064855, 6387126785648912581213165822171077074078454

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OFFSET

1,1

COMMENTS

Diagonal of A204630

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..11

EXAMPLE

Some solutions for n=3

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

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

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