A232119 Number of (n+1)X(3+1) 0..2 arrays with every element both >= and <= some horizontal or vertical neighbor

611, 26029, 1060647, 44229031, 1841606457, 76671235227, 3192300139421, 132915745358065, 5534116036969515, 230420114464294879, 9593840058097695219, 399451969863991106451, 16631700710453882779147, 692482424027733745256629

Offset

1,1

Comments

Column 3 of A232124

Links

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

Example

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

Crossrefs

Sequence in context: A072323 A235381 A202373 * A232417 A250997 A356643

Adjacent sequences: A232116 A232117 A232118 * A232120 A232121 A232122

Keyword

nonn

Author

R. H. Hardin, Nov 19 2013

Status

approved