A206647 Number of nX5 0..2 arrays with no occurrence of three equal elements in a row horizontally or vertically, and new values 0..2 introduced in row major order

30, 5400, 545520, 64166392, 7241587334, 826407481102, 94026798615720, 10706810410657410, 1218916563384756248, 138775670998651399066, 15799590241852733103686, 1798788750708910721959118

Offset

1,1

Comments

Column 5 of A206650

Links

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

Example

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

Crossrefs

Sequence in context: A341875 A204975 A204702 * A321427 A050984 A169686

Adjacent sequences: A206644 A206645 A206646 * A206648 A206649 A206650

Keyword

nonn

Author

R. H. Hardin Feb 11 2012

Status

approved