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A237466 Number of (n+1)X(2+1) 0..2 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
356, 2308, 14968, 99086, 651906, 4259914, 27861088, 183385520, 1204325662, 7888272520, 51703064498, 339590886580, 2228614232926, 14611384819402, 95829344877344, 628938894654416, 4126515883377788, 27064861657856340 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A237472

LINKS

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

FORMULA

Empirical: a(n) = 70*a(n-3) +1053*a(n-4) +1879*a(n-5) +5530*a(n-6) -1147*a(n-7) -108738*a(n-8) -155485*a(n-9) +35869*a(n-10) +101903*a(n-11) +100682*a(n-12) -23634*a(n-13) -19682*a(n-14)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A221450 A232298 A108375 * A233686 A231078 A232851

Adjacent sequences:  A237463 A237464 A237465 * A237467 A237468 A237469

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 08 2014

STATUS

approved

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Last modified January 23 14:34 EST 2022. Contains 350512 sequences. (Running on oeis4.)