A236905 Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the upper median plus the minimum of every 2X2 subblock equal

1056, 6762, 44836, 326868, 2411550, 18527054, 143619570, 1138035570, 9082354564, 73458657386, 597388648952, 4899765429646, 40348694602260, 334106991780094, 2774430383216444, 23121941059834148, 193077412267829618

Offset

1,1

Comments

Column 2 of A236911

Links

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

Example

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

Crossrefs

Sequence in context: A359624 A225714 A158692 * A281079 A023072 A168627

Adjacent sequences: A236902 A236903 A236904 * A236906 A236907 A236908

Keyword

nonn

Author

R. H. Hardin, Feb 01 2014

Status

approved