A199644 Number of nX5 0..2 arrays with values 0..2 introduced in row major order and each element equal to one or two horizontal and vertical neighbors

3, 288, 12748, 658770, 32177372, 1614250077, 80053957248, 3988024796446, 198328767139736, 9869645990489747, 491026123739354858, 24431608808618462704, 1215575822472077464282, 60480991464785183388557

Offset

1,1

Comments

Column 5 of A199647

Links

R. H. Hardin, Table of n, a(n) for n = 1..177

Example

Some solutions for n=3
..0..1..0..2..2....0..0..0..0..0....0..0..0..1..1....0..1..0..0..1
..0..1..0..2..2....0..1..1..2..1....0..1..1..1..2....0..1..1..0..1
..0..2..2..0..0....0..1..1..2..1....0..0..0..2..2....2..2..1..0..1

Crossrefs

Sequence in context: A057631 A058455 A116532 * A347138 A124357 A212798

Adjacent sequences: A199641 A199642 A199643 * A199645 A199646 A199647

Keyword

nonn

Author

R. H. Hardin Nov 08 2011

Status

approved