A196639 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,4,2,0,3 for x=0,1,2,3,4

1, 65, 780, 10708, 154629, 2166536, 30213746, 423781213, 5929501986, 83127041136, 1164232610323, 16309719386435, 228474526845154, 3200565487849560, 44835398622377697, 628080583294667526, 8798521636340417779

Offset

1,2

Comments

Every 0 is next to 0 1's, every 1 is next to 1 4's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 3's

Column 6 of A196641

Links

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

Example

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

Crossrefs

Sequence in context: A220389 A371628 A196634 * A008516 A000540 A023875

Adjacent sequences: A196636 A196637 A196638 * A196640 A196641 A196642

Keyword

nonn

Author

R. H. Hardin Oct 04 2011

Status

approved