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A236815 Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal 1
4627, 66853, 956456, 14757359, 230126265, 3697318630, 60011383119, 987175371637, 16341810901082, 272220635630305, 4550173897917093, 76282741176721868, 1281112106487025787, 21546122287223223153 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A236819

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A254850 A139410 A031566 * A233855 A068268 A227482

Adjacent sequences:  A236812 A236813 A236814 * A236816 A236817 A236818

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 31 2014

STATUS

approved

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Last modified May 27 12:58 EDT 2020. Contains 334657 sequences. (Running on oeis4.)