A223055 Number of n X n 0..3 arrays with all horizontally or vertically connected equal values in a straight line, and new values 0..3 introduced in row major order

1, 10, 4865, 31331820, 2266567594841, 1837966217755803448, 16700483735732492103987445, 1700203937054371815103811136350852

Offset

1,2

Comments

Diagonal of A223062

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A276241 A233250 A273415 * A308488 A180419 A061888

Adjacent sequences: A223052 A223053 A223054 * A223056 A223057 A223058

Keyword

nonn

Author

R. H. Hardin Mar 13 2013

Status

approved