A232417 Number of (3+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, diagonal or antidiagonal neighbor

611, 48971, 2189991, 119994763, 7049296087, 406420576301, 23292336981303, 1336844624255445, 76777308098243143, 4408843158662081661, 253155497723433782073, 14536353592415913441265, 834692779757597144689489

Offset

1,1

Comments

Row 3 of A232414

Links

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

Example

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

Crossrefs

Sequence in context: A235381 A202373 A232119 * A250997 A356643 A022049

Adjacent sequences: A232414 A232415 A232416 * A232418 A232419 A232420

Keyword

nonn

Author

R. H. Hardin, Nov 23 2013

Status

approved