A198707 Number of nX7 0..4 arrays with values 0..4 introduced in row major order and each element equal to at least one horizontal or vertical neighbor

11, 27422, 77622801, 316137386807, 1259339424693241

Offset

1,1

Comments

Column 7 of A198708

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A264917 A198668 A346206 * A198626 A343119 A295176

Adjacent sequences: A198704 A198705 A198706 * A198708 A198709 A198710

Keyword

nonn

Author

R. H. Hardin Oct 29 2011

Status

approved