A237473 Number of (n+1)X(n+1) 0..2 arrays with the maximum plus the lower median of every 2X2 subblock equal

81, 2529, 273756, 135347721, 244543486040, 1640648838595724, 38293825867854082781, 3176824313417920690502165, 919253305896358668335124292784

Offset

1,1

Comments

Diagonal of A237481

Links

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

Example

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

Crossrefs

Sequence in context: A297606 A236729 A236147 * A282995 A295274 A206534

Adjacent sequences: A237470 A237471 A237472 * A237474 A237475 A237476

Keyword

nonn

Author

R. H. Hardin, Feb 08 2014

Status

approved