A237689 Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock equal

1120, 6964, 44648, 305054, 2123660, 15253914, 111492872, 834134686, 6338273516, 49073750056, 384947250680, 3064361417896, 24646217823714, 200415626583528, 1642220553940964, 13562290810572598, 112611292640858902

Offset

1,1

Comments

Column 2 of A237694

Links

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

Example

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

Crossrefs

Sequence in context: A235275 A235314 A340790 * A032777 A234445 A222695

Adjacent sequences: A237686 A237687 A237688 * A237690 A237691 A237692

Keyword

nonn

Author

R. H. Hardin, Feb 11 2014

Status

approved