A237084 Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock equal.

912, 3968, 17636, 84918, 412158, 2074898, 10501584, 54426654, 283246634, 1501153826, 7982904282, 43093989466, 233307639076, 1279207121514, 7031261342472, 39062684180020, 217475517840918, 1221592361623196

Offset

1,1

Comments

Column 2 of A237090

Links

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

Example

Some solutions for n=4
..1..2..3....0..2..1....3..1..3....3..3..3....3..2..3....0..3..0....1..0..0
..2..2..2....2..1..3....2..2..0....2..3..2....2..2..2....1..1..1....0..3..1
..2..3..2....2..2..1....3..3..1....1..3..3....2..3..2....0..3..2....0..1..1
..2..2..2....2..1..3....3..3..1....3..2..3....2..2..2....0..2..2....1..2..2
..3..2..1....3..1..2....2..2..2....2..0..2....2..3..2....2..1..2....2..1..1

Crossrefs

Sequence in context: A145646 A093634 A220984 * A224969 A263122 A286214

Adjacent sequences: A237081 A237082 A237083 * A237085 A237086 A237087

Keyword

nonn

Author

R. H. Hardin, Feb 03 2014

Status

approved