A197046 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,0,1,3 for x=0,1,2,3,4

13, 2057, 141856, 9248339, 621506173, 42346212260, 2887590375825, 196473830384459, 13380873189121311, 910764986424304753, 61996774523408648312, 4220890096247905089568, 287338357690684994223092

Offset

1,1

Comments

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

Column 7 of A197047

Links

R. H. Hardin, Table of n, a(n) for n = 1..59

Example

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

Crossrefs

Sequence in context: A128394 A196801 A196589 * A283633 A221823 A075601

Adjacent sequences: A197043 A197044 A197045 * A197047 A197048 A197049

Keyword

nonn

Author

R. H. Hardin Oct 08 2011

Status

approved