A232418 Number of (4+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, diagonal or antidiagonal neighbor

3635, 890283, 107913855, 16776955943, 2832909399671, 467364164103927, 76546444859852733, 12560477344372419185, 2062688244987841370793, 338674483333185405086591, 55602676837277868877030495

Offset

1,1

Comments

Row 4 of A232414

Links

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

Example

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

Crossrefs

Sequence in context: A341264 A287219 A232120 * A206844 A206836 A206898

Adjacent sequences: A232415 A232416 A232417 * A232419 A232420 A232421

Keyword

nonn

Author

R. H. Hardin, Nov 23 2013

Status

approved