A205168 Number of (n+1) X 7 0..3 arrays with every 2 X 2 subblock having unequal diagonal elements or unequal antidiagonal elements, and new values 0..3 introduced in row major order.

7594479, 84495589507, 940186880752830, 10461512493459648399, 116405840403665540209755, 1295254361100907855849613402, 14412368435597398387437153667773, 160367237634205038100384071460748125

Offset

1,1

Comments

Column 6 of A205170.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..0..1..2..2..1..0..0....0..0..1..2..0..3..3....0..0..0..1..0..1..2
..3..0..0..1..1..1..3....1..2..0..3..0..1..3....1..1..0..0..2..0..3
..3..3..2..0..0..2..1....2..0..3..3..3..2..3....2..1..1..0..0..3..1
..1..3..1..0..1..1..0....0..0..3..0..3..2..1....3..0..1..0..1..3..2
..2..3..2..1..1..0..3....0..2..2..3..1..0..1....3..1..3..2..2..1..1

Crossrefs

Cf. A205170.

Sequence in context: A213462 A102334 A043668 * A307476 A237156 A233605

Adjacent sequences: A205165 A205166 A205167 * A205169 A205170 A205171

Keyword

nonn

Author

R. H. Hardin, Jan 22 2012

Status

approved