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A237680 Number of (n+1)X(3+1) 0..2 arrays colored with the upper median plus the lower median minus the minimum of every 2X2 subblock 1
2741, 35620, 449258, 5732688, 74265677, 959069036, 12309130146, 158172430796, 2039503492244, 26262766183068, 337868797917464, 4347180105311788, 55983639564753292, 720610706816450932, 9274854470107789578 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A237683

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A094401 A035774 A107570 * A262819 A094497 A202460

Adjacent sequences:  A237677 A237678 A237679 * A237681 A237682 A237683

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 11 2014

STATUS

approved

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Last modified October 31 08:46 EDT 2020. Contains 338101 sequences. (Running on oeis4.)