A198712 Number of nX5 0..3 arrays with values 0..3 introduced in row major order and no element equal to any horizontal or vertical neighbor

14, 1201, 107042, 9548295, 851787199, 75987485516, 6778819400772, 604736581320925, 53948385378521909, 4812720805166620356, 429341516830025751982, 38301440209010857426775, 3416861087749979581617789

Offset

1,1

Comments

Column 5 of A198715

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Formula

Empirical: a(n) = 119*a(n-1) -2929*a(n-2) +25066*a(n-3) -76115*a(n-4) -887*a(n-5) +324153*a(n-6) -444798*a(n-7) +175392*a(n-8)

Example

Some solutions with all values from 0 to 3 for n=4
..0..1..2..0..2....0..1..2..3..1....0..1..0..2..0....0..1..2..0..1
..1..0..3..2..3....1..0..3..1..0....1..0..1..0..1....1..0..1..2..3
..0..1..2..3..1....0..1..2..3..2....0..1..2..1..3....0..1..0..3..1
..1..3..0..2..3....1..2..1..2..1....1..3..0..3..2....1..0..2..1..0

Crossrefs

Sequence in context: A232373 A323181 A206613 * A204972 A209677 A137603

Adjacent sequences: A198709 A198710 A198711 * A198713 A198714 A198715

Keyword

nonn

Author

R. H. Hardin Oct 29 2011

Status

approved