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A237805 Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock equal 1
4251, 65777, 932255, 14666689, 226466977, 3610379651, 57208751041, 917186234601, 14670753459691, 235787348326225, 3786543353023327, 60941042110079321, 980655931649320541, 15798662811986093729 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A237809

LINKS

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

EXAMPLE

Some solutions for n=2

..1..0..0..2..0....0..2..0..2..0....2..0..2..0..1....2..1..2..1..0

..2..2..2..0..2....0..2..1..2..1....2..2..0..2..2....2..2..1..2..0

..0..0..2..2..0....2..2..0..2..0....0..1..2..2..0....2..1..0..1..1

CROSSREFS

Sequence in context: A204872 A204638 A205995 * A031985 A138399 A224725

Adjacent sequences:  A237802 A237803 A237804 * A237806 A237807 A237808

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 13 2014

STATUS

approved

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Last modified August 8 21:04 EDT 2022. Contains 356016 sequences. (Running on oeis4.)