A206207 Number of (n+1)X(n+1) 0..2 arrays with every 2X3 or 3X2 subblock having exactly two equal edges, and new values 0..2 introduced in row major order

14, 130, 760, 8136, 86152, 1764000, 68074272, 2870491680, 232945511040, 35774121536640, 6032245277059200, 1955894774772902400, 1200725012024612467200, 809841945662029576512000

Offset

1,1

Comments

Diagonal of A206215

Links

R. H. Hardin, Table of n, a(n) for n = 1..20

Example

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

Crossrefs

Sequence in context: A021354 A208427 A006565 * A358168 A026936 A021114

Adjacent sequences: A206204 A206205 A206206 * A206208 A206209 A206210

Keyword

nonn

Author

R. H. Hardin Feb 04 2012

Status

approved