A232120 Number of (n+1) X (4+1) 0..2 arrays with every element both >= and <= some horizontal or vertical neighbor.

3635, 411015, 44229031, 4894583715, 539351064745, 59455853081501, 6554255427911017, 722517279545733561, 79647935033498582775, 8780120930843264963437, 967891111255430483106883

Offset

1,1

Comments

Column 4 of A232124.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A232124.

Sequence in context: A143930 A341264 A287219 * A232418 A206844 A206836

Adjacent sequences: A232117 A232118 A232119 * A232121 A232122 A232123

Keyword

nonn

Author

R. H. Hardin, Nov 19 2013

Status

approved