A235894 Number of (n+1)X(n+1) 0..2 arrays with the minimum plus the maximum equal to the lower median plus the upper median in every 2X2 subblock

33, 641, 21697, 1384257, 160019457, 35883075329, 14843231431681, 12202637534483457, 18568324609578868737, 57651220931356692262913

Offset

1,1

Comments

Diagonal of A235902

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A252926 A225970 A004328 * A261486 A094760 A365645

Adjacent sequences: A235891 A235892 A235893 * A235895 A235896 A235897

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved