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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 1
1120, 6964, 44648, 305054, 2123660, 15253914, 111492872, 834134686, 6338273516, 49073750056, 384947250680, 3064361417896, 24646217823714, 200415626583528, 1642220553940964, 13562290810572598, 112611292640858902 (list; graph; refs; listen; history; text; internal format)
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: A171004 A235275 A235314 * A032777 A234445 A222695

Adjacent sequences:  A237686 A237687 A237688 * A237690 A237691 A237692

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 11 2014

STATUS

approved

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Last modified August 7 15:08 EDT 2020. Contains 336276 sequences. (Running on oeis4.)