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A237551 Number of (n+1)X(2+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
312, 1668, 8764, 44668, 224948, 1181206, 6170564, 31538382, 160690160, 838194016, 4355102280, 22315658240, 114413801424, 594413227190, 3078427346856, 15808430494646, 81314611678564, 421380982769344, 2178294253001920 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A237557

LINKS

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

FORMULA

Empirical: a(n) = 26*a(n-3) +473*a(n-4) +382*a(n-5) +716*a(n-6) +1304*a(n-7) -5953*a(n-8) -1004*a(n-9) -1124*a(n-10) -466*a(n-11) +9039*a(n-12) +792*a(n-13) -3360*a(n-14)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A011251 A043360 A339074 * A270608 A233939 A233934

Adjacent sequences:  A237548 A237549 A237550 * A237552 A237553 A237554

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 09 2014

STATUS

approved

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Last modified November 29 01:40 EST 2021. Contains 349416 sequences. (Running on oeis4.)