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A236349 Number of (n+1)X(1+1) 0..2 arrays colored with the sum of the upper and lower median values of each 2X2 subblock 1
81, 462, 2588, 14952, 86800, 498976, 2868608, 16528896, 95237312, 548375168, 3157831104, 18187196288, 104744570304, 603223995008, 3474009593280, 20007251750272, 115223864129984, 663584670077056, 3821648785574336 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A236354

LINKS

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

FORMULA

Empirical: a(n) = 9*a(n-2) +64*a(n-3) +304*a(n-4) +596*a(n-5) +912*a(n-6) +176*a(n-7) -2528*a(n-8) -3648*a(n-9) -2048*a(n-10)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A253526 A183963 A236354 * A334036 A253524 A254422

Adjacent sequences:  A236346 A236347 A236348 * A236350 A236351 A236352

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 23 2014

STATUS

approved

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Last modified September 18 19:30 EDT 2021. Contains 347534 sequences. (Running on oeis4.)