A237874 Number of (n+2)X(1+2) 0..3 arrays with the (lower) medians of each row unequal to its neighbors and each column equal to its neighbors

8688, 545004, 27056160, 1569462504, 74688648384, 4226663427372, 187073313101280, 10432303205684856, 442700713763856576

Offset

1,1

Comments

Column 1 of A237875

Links

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

Example

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

Crossrefs

Sequence in context: A235171 A237875 A237876 * A252646 A170796 A035909

Adjacent sequences: A237871 A237872 A237873 * A237875 A237876 A237877

Keyword

nonn

Author

R. H. Hardin, Feb 14 2014

Status

approved