A204152 Number of (n+2)X9 0..2 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..2 introduced in row major order

23538722, 169527242, 864266300, 4577683574, 25275772916, 138134688554, 770374556792, 4130467300382, 22550685062612, 121999878097538, 662599450745240, 3588969319485734, 19369358858520164, 104916399180100634

Offset

1,1

Comments

Column 7 of A204153

Links

R. H. Hardin, Table of n, a(n) for n = 1..21

Example

Some solutions for n=4
..0..1..1..0..1..1..2..2..2....0..0..0..0..1..2..1..0..0
..2..0..1..1..1..1..1..2..1....1..0..0..1..0..1..2..0..1
..1..2..0..1..1..1..1..1..2....0..0..1..0..1..0..0..2..2
..0..0..2..0..1..1..1..1..0....0..1..0..1..0..0..0..0..2
..0..2..0..2..0..1..1..1..1....1..0..1..0..0..0..0..0..0
..2..2..0..0..2..0..1..1..1....1..1..0..0..1..0..0..0..0

Crossrefs

Sequence in context: A104951 A235971 A187551 * A132906 A234342 A104922

Adjacent sequences: A204149 A204150 A204151 * A204153 A204154 A204155

Keyword

nonn

Author

R. H. Hardin Jan 11 2012

Status

approved