A237875 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with the (lower) medians of each row unequal to its neighbors and each column equal to its neighbors

8688, 160116, 545004, 2555616, 33010248, 27056160, 51445400, 3553300428, 9104981940, 1569462504, 812946240, 217951919352, 2518253444304, 1912276362868, 74688648384, 17003002820, 27580184157228

Offset

1,1

Comments

Table starts

........8688........160116.......2555616.....51445400......812946240

......545004......33010248....3553300428.217951919352.27580184157228

....27056160....9104981940.2518253444304

..1569462504.1912276362868

.74688648384

Links

Table of n, a(n) for n=1..17.

Example

Some solutions for n=1 k=4
..0..0..1..0..1..1....0..0..3..2..3..1....0..0..0..0..0..0....0..0..3..1..1..1
..1..1..1..1..0..1....1..1..0..0..1..0....1..1..0..1..0..3....1..1..0..3..0..0
..3..1..3..3..2..0....2..1..1..1..1..2....0..0..0..0..2..0....2..1..1..1..2..2

Crossrefs

Sequence in context: A254697 A242140 A235171 * A237876 A237874 A252646

Adjacent sequences: A237872 A237873 A237874 * A237876 A237877 A237878

Keyword

nonn,tabl

Author

R. H. Hardin, Feb 14 2014

Status

approved