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A218175 Number of nX2 arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 nX2 array 2
4, 28, 192, 956, 5494, 30888, 172038, 964828, 5400158, 30225794, 169223054, 947302656, 5303071898, 29687164126, 166191023656, 930351759572, 5208189255764, 29155886563482, 163217149535782, 913703559802622 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A218181

LINKS

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

FORMULA

Empirical: a(n) = 4*a(n-1) +8*a(n-2) +13*a(n-3) -33*a(n-4) -36*a(n-5) -86*a(n-6) -145*a(n-7) -161*a(n-8) +132*a(n-9) +538*a(n-10) +364*a(n-11) -112*a(n-12) -32*a(n-13)

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A219405 A001396 A155611 * A002903 A208704 A270471

Adjacent sequences:  A218172 A218173 A218174 * A218176 A218177 A218178

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 22 2012

STATUS

approved

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Last modified August 7 12:18 EDT 2020. Contains 336276 sequences. (Running on oeis4.)