A232379 Number of 4Xn 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, diagonally or antidiagonally, and no adjacent values equal

1, 230, 4550, 63744, 927706, 14326374, 219597458, 3342549408, 50948669958, 777136688838, 11852126079904, 180743308881776, 2756349347909628, 42034903671321438, 641040165008121734, 9775973027252581380

Offset

1,2

Comments

Row 4 of A232376

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 60

Formula

Empirical recurrence of order 60 (see link above)

Example

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

Crossrefs

Sequence in context: A251283 A251276 A194490 * A333136 A231061 A231107

Adjacent sequences: A232376 A232377 A232378 * A232380 A232381 A232382

Keyword

nonn

Author

R. H. Hardin, Nov 23 2013

Status

approved