A238024 Number of (n+2)X(4+2) 0..1 arrays with the (lower) medians of each row unequal to its neighbors and each column equal to its neighbors.

828, 32502, 793252, 11523584, 896174928, 6030131286, 1025754609412, 4990295869136, 1156983221914968, 5730195951104520, 1281261782056117072, 7323644409166221296, 1394840496115170351648, 9354075220794052401366

Offset

1,1

Comments

Column 4 of A238026

Links

Table of n, a(n) for n=1..14.

Example

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

Crossrefs

Sequence in context: A234085 A226536 A099052 * A015991 A065215 A252988

Adjacent sequences: A238021 A238022 A238023 * A238025 A238026 A238027

Keyword

nonn

Author

R. H. Hardin, Feb 17 2014

Status

approved