A209496 Number of n X n 0..4 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..4 introduced in row major order

1, 6, 1938, 9502354, 416022303027, 154401817037192112, 485400266057664024464791

Offset

1,2

Comments

Diagonal of A209503

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A250393 A221627 A160301 * A372525 A341872 A024086

Adjacent sequences: A209493 A209494 A209495 * A209497 A209498 A209499

Keyword

nonn

Author

R. H. Hardin Mar 09 2012

Status

approved