A235906 Number of (n+1)X(3+1) 0..2 arrays with the minimum plus the maximum unequal to the lower median plus the upper median in every 2X2 subblock

1408, 26408, 499136, 9533120, 181855488, 3481713664, 66562286592, 1274524104704, 24381793964032, 466787561906176, 8931943648346112, 170980467157925888, 3272077297963827200, 62631436553438232576

Offset

1,1

Comments

Column 3 of A235911

Links

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

Formula

Empirical: a(n) = 6*a(n-1) +396*a(n-2) -1048*a(n-3) -38944*a(n-4) +61312*a(n-5) +1096192*a(n-6) -877056*a(n-7) -1101824*a(n-8) +851968*a(n-9)

Example

Some solutions for n=2
..0..1..0..1....2..1..2..2....2..0..2..0....0..2..1..0....2..1..1..0
..0..2..0..2....0..2..0..2....0..1..2..1....2..2..0..0....2..2..1..1
..0..0..0..0....2..1..2..2....2..2..0..2....2..0..0..2....1..2..0..1

Crossrefs

Sequence in context: A045127 A210786 A187957 * A364184 A204745 A204741

Adjacent sequences: A235903 A235904 A235905 * A235907 A235908 A235909

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved