A206388 Number of nX7 0..6 arrays with no element equal to another within a city block distance of two, and new values 0..6 introduced in row major order

52, 62004, 21916090, 8094257014, 2965468376203

Offset

1,1

Comments

Column 7 of A206389

Links

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

Example

Some solutions for n=4
..0..1..2..0..1..2..3....0..1..2..3..0..2..1....0..1..2..0..1..2..0
..4..3..5..6..3..4..5....4..3..5..4..6..5..0....3..4..5..3..6..4..1
..1..6..4..1..0..6..1....1..2..6..0..1..3..6....1..2..6..4..2..3..5
..2..0..3..5..2..3..4....3..4..1..5..2..0..4....4..3..0..5..1..6..4

Crossrefs

Sequence in context: A157280 A182924 A208785 * A263223 A198525 A208580

Adjacent sequences: A206385 A206386 A206387 * A206389 A206390 A206391

Keyword

nonn

Author

R. H. Hardin Feb 07 2012

Status

approved