login
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
OFFSET
1,1
COMMENTS
Column 3 of A236828
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 31 2014
STATUS
approved