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A237326 Number of (n+1)X(2+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
320, 1660, 8588, 45996, 242644, 1279474, 6740992, 36117846, 190631336, 1005363146, 5297587660, 28385155912, 149821450268, 790147365438, 4163579409000, 22309054217762, 117750984236192, 621010645500502 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A237332

LINKS

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

FORMULA

Empirical: a(n) = 886*a(n-4) -81785*a(n-8) +2512316*a(n-12) -31242554*a(n-16) +155011102*a(n-20) -288082700*a(n-24) +141692576*a(n-28) +6787392*a(n-32) for n>34

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A110289 A258681 A258674 * A055863 A168636 A264140

Adjacent sequences:  A237323 A237324 A237325 * A237327 A237328 A237329

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 06 2014

STATUS

approved

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Last modified October 5 23:01 EDT 2022. Contains 357261 sequences. (Running on oeis4.)