A222870 Number of nX4 0..5 arrays with no element equal to another at a city block distance of exactly two, and new values 0..5 introduced in row major order

7, 370, 30528, 2903520, 276768768, 26393020608, 2516653274112, 239976498026352, 22882892571893280, 2181996323092650432, 208063958702105336832, 19839913341854050041888, 1891832423610196628408928

Offset

1,1

Comments

Column 4 of A222871

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

Some solutions for n=3
..0..0..1..2....0..1..2..3....0..1..2..0....0..0..1..2....0..0..1..1
..2..3..3..4....4..4..2..5....0..3..4..1....3..4..5..3....2..3..4..5
..4..5..0..4....5..3..0..4....2..5..4..2....3..1..2..4....1..3..4..0

Crossrefs

Sequence in context: A203706 A145181 A221353 * A270247 A270228 A082443

Adjacent sequences: A222867 A222868 A222869 * A222871 A222872 A222873

Keyword

nonn

Author

R. H. Hardin Mar 07 2013

Status

approved