A236906 Number of (n+1)X(3+1) 0..3 arrays with the maximum plus the upper median plus the minimum of every 2X2 subblock equal

4448, 44836, 451396, 5345722, 62508118, 789404948, 9889339846, 129170196446, 1678632250620, 22339759369142, 296283345006762, 3983775288283852, 53436418787302376, 722470660610366682, 9751630939930532900

Offset

1,1

Comments

Column 3 of A236911

Links

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

Example

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

Crossrefs

Sequence in context: A114908 A102622 A280485 * A184611 A279042 A253697

Adjacent sequences: A236903 A236904 A236905 * A236907 A236908 A236909

Keyword

nonn

Author

R. H. Hardin, Feb 01 2014

Status

approved