A236801 Number of (n+1)X(n+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock equal

81, 1435, 85929, 16530709, 6612746409, 11092792124317, 27385111938746265, 497183007539695570813, 7087061017965887490247401

Offset

1,1

Comments

Diagonal of A236809

Links

Table of n, a(n) for n=1..9.

Example

Some solutions for n=3
..1..0..0..2....1..0..1..1....0..0..2..0....0..1..0..1....1..2..0..0
..1..1..0..1....2..2..2..1....1..2..1..2....2..0..0..0....0..0..1..2
..1..0..2..0....0..1..0..0....0..2..0..2....1..2..1..2....2..1..1..1
..1..1..2..1....0..0..0..1....2..1..2..1....1..1..1..1....0..0..1..2

Crossrefs

Sequence in context: A237455 A253488 A236738 * A282646 A283542 A237771

Adjacent sequences: A236798 A236799 A236800 * A236802 A236803 A236804

Keyword

nonn

Author

R. H. Hardin, Jan 31 2014

Status

approved