A232347 Number of (n+1)X(3+1) 0..2 arrays with every element both >= and <= some horizontal, vertical, diagonal or antidiagonal neighbor

1461, 111607, 6753291, 426813751, 27382170933, 1753672323629, 112198453386465, 7178913247853751, 459367231584591507, 29394095101817393631, 1880867639785229395915, 120352854144851883802499

Offset

1,1

Comments

Column 3 of A232352

Links

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

R. H. Hardin, Empirical recurrence of order 80

Formula

Empirical recurrence of order 80 (see link above)

Example

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

Crossrefs

Sequence in context: A237947 A205316 A283493 * A251942 A251943 A251950

Adjacent sequences: A232344 A232345 A232346 * A232348 A232349 A232350

Keyword

nonn

Author

R. H. Hardin, Nov 22 2013

Status

approved