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A236590 Number of (n+1)X(2+1) 0..3 arrays colored with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock 1
2968, 80008, 2181116, 59464564, 1618144324, 44032289456, 1198678030904, 32632424118312, 888260075143676, 24178458609189628, 658161603799159464, 17915900619841392804, 487684497575036800836, 13275130575831961753824 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A236592

LINKS

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

EXAMPLE

Some solutions for n=2

..2..0..0....0..2..0....3..2..2....2..1..1....1..2..1....1..0..0....0..3..3

..3..2..0....1..3..3....0..3..0....2..2..0....1..3..3....1..3..3....2..1..0

..0..3..0....3..0..0....1..0..3....3..2..3....3..3..3....3..1..2....0..2..1

CROSSREFS

Sequence in context: A236005 A107534 A184079 * A255790 A252947 A272285

Adjacent sequences:  A236587 A236588 A236589 * A236591 A236592 A236593

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 29 2014

STATUS

approved

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Last modified August 18 14:22 EDT 2022. Contains 356215 sequences. (Running on oeis4.)