A197249 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4.

2, 192, 1035, 16773, 213912, 3264225, 48703999, 692974749, 9613268927, 144634486646, 2038308764828, 29317910548935, 416838295672468, 6110472912181664, 87970427980764925, 1247341042216025997

Offset: 1

Author

R. H. Hardin Oct 12 2011

Keywords

• nonn

Comments

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

Column 7 of A197250

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..155