A236867 Number of (n+1)X(n+1) 0..2 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock equal

81, 1503, 61750, 5913287, 1152135751, 522548961680, 503953627472071, 1150154956960934843

Offset

1,1

Comments

Diagonal of A236875

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A283542 A237771 A110921 * A203650 A284057 A237559

Adjacent sequences: A236864 A236865 A236866 * A236868 A236869 A236870

Keyword

nonn

Author

R. H. Hardin, Feb 01 2014

Status

approved