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A236733 Number of (n+1)X(4+1) 0..2 arrays with the upper median minus the lower median of every 2X2 subblock equal 1
6663, 131147, 2541745, 55635639, 1233474275, 28500435385, 665661690049, 15768609931211, 375569735335243, 8989526603612093, 215676078863399425, 5183740859875741691, 124709488532738105743, 3002226669923859228469 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A236737

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A233661 A131645 A186086 * A015310 A043516 A046410

Adjacent sequences:  A236730 A236731 A236732 * A236734 A236735 A236736

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 30 2014

STATUS

approved

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Last modified August 6 14:47 EDT 2020. Contains 336247 sequences. (Running on oeis4.)