A198704 Number of nX4 0..4 arrays with values 0..4 introduced in row major order and each element equal to at least one horizontal or vertical neighbor

2, 76, 3893, 322230, 30407251, 3075124662, 316137386807, 32741782389619, 3397146912481247, 352742075116393899, 36634081239038426907, 3804936727099857364455, 395201634386514861187551

Offset

1,1

Comments

Column 4 of A198708

Links

R. H. Hardin, Table of n, a(n) for n = 1..124

Example

Some solutions with all values 0 to 4 for n=3
..0..0..1..1....0..0..1..1....0..0..1..1....0..0..1..2....0..1..1..2
..2..0..3..4....2..2..3..3....2..2..3..3....3..1..1..2....0..3..1..2
..2..0..3..4....4..4..3..3....3..3..4..4....3..3..4..4....3..3..4..4

Crossrefs

Sequence in context: A351376 A276203 A324216 * A198623 A198651 A198658

Adjacent sequences: A198701 A198702 A198703 * A198705 A198706 A198707

Keyword

nonn

Author

R. H. Hardin Oct 29 2011

Status

approved