A231078 Number of nX5 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3 and at least one element with value (x(i,j)-1) mod 3, and upper left element zero

0, 356, 2820, 523936, 18655220, 1480839364, 79624748768, 5187293040908, 307729928208180, 19115615460927472, 1161044841496720396, 71301912726439945596, 4355237502171618351824, 266729318902157988715636

Offset

1,2

Comments

Column 5 of A231080

Links

R. H. Hardin, Table of n, a(n) for n = 1..80

Example

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

Crossrefs

Sequence in context: A108375 A237466 A233686 * A232851 A223428 A277765

Adjacent sequences: A231075 A231076 A231077 * A231079 A231080 A231081

Keyword

nonn

Author

R. H. Hardin, Nov 03 2013

Status

approved