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A236823 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the minimum minus the lower median of every 2X2 subblock equal 1
1386, 15254, 168564, 1949236, 22695802, 269108894, 3207539588, 38599508572, 466275664500, 5664487537556, 69007333422447, 843652458439362, 10335176759901673, 126898784204316940, 1560376523474291714 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A236828

LINKS

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

R. H. Hardin, Empirical recurrence of order 84

FORMULA

Empirical recurrence of order 84 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A175695 A286837 A023090 * A092721 A214355 A230334

Adjacent sequences: A236820 A236821 A236822 * A236824 A236825 A236826

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 31 2014

STATUS

approved

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Last modified February 2 13:35 EST 2023. Contains 360021 sequences. (Running on oeis4.)