A197097 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,0,0,1 for x=0,1,2,3,4

13, 1439, 45843, 2253537, 105551542, 4886330995, 227951140324, 10611747125529, 494205872758082, 23013994189839780, 1071725356148151651, 49908553928282027953, 2324157974481616112739, 108232267483106900191660

Offset

1,1

Comments

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

Column 7 of A197098

Links

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

Example

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

Crossrefs

Sequence in context: A196966 A203369 A350305 * A353030 A064962 A242562

Adjacent sequences: A197094 A197095 A197096 * A197098 A197099 A197100

Keyword

nonn

Author

R. H. Hardin Oct 10 2011

Status

approved