A207203 Number of nX3 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal

25, 625, 11047, 193260, 3345883, 58023139, 1009600274, 17573182050, 306058145014, 5330310582515, 92834551981258, 1616822219788212, 28158656967348234, 490411967797286692, 8541018731669475765

Offset

1,1

Comments

Column 3 of A207208

Links

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

Example

Some solutions for n=5
..1..0..1....1..2..0....0..0..2....2..0..2....2..0..1....2..0..2....1..0..2
..1..2..2....1..2..1....0..0..0....2..0..1....0..0..0....2..2..0....0..1..0
..0..1..2....0..2..0....0..2..2....2..2..2....2..2..1....0..2..1....0..0..0
..2..2..1....0..0..2....0..0..2....1..2..1....2..0..0....2..0..1....2..0..0
..2..1..1....2..0..0....0..2..2....0..2..1....2..0..0....2..0..0....2..0..0

Crossrefs

Sequence in context: A288854 A208081 A207209 * A206858 A068180 A206952

Adjacent sequences: A207200 A207201 A207202 * A207204 A207205 A207206

Keyword

nonn

Author

R. H. Hardin Feb 15 2012

Status

approved