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A236895 Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median of every 2X2 subblock equal 1
81, 339, 1426, 6545, 30727, 148966, 734805, 3679063, 18601074, 94728601, 484797943, 2489729974, 12816761181, 66088527271, 341168095114, 1762603785057, 9111229406855, 47115466594414, 243704127371685, 1260784775294295 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A236902

LINKS

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

FORMULA

Empirical: a(n) = 9*a(n-1) -187*a(n-3) +343*a(n-4) +1052*a(n-5) -2856*a(n-6) -1872*a(n-7) +8792*a(n-8) -856*a(n-9) -11368*a(n-10) +5024*a(n-11) +4992*a(n-12) -3072*a(n-13)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A237868 A237861 A236902 * A237965 A238046 A237958

Adjacent sequences:  A236892 A236893 A236894 * A236896 A236897 A236898

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 01 2014

STATUS

approved

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Last modified January 20 20:50 EST 2021. Contains 340332 sequences. (Running on oeis4.)