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

1386, 15254, 168564, 1949236, 22695802, 269108894, 3207539588, 38599508572, 466275664500, 5664487537556, 69007333422447, 843652458439362, 10335176759901673, 126898784204316940, 1560376523474291714

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