A197248 Number of nX6 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.

3, 80, 227, 5713, 31276, 405065, 3264225, 29975706, 324191969, 2687575073, 30493965518, 259733680667, 2634174755809, 25422825883256, 236887111563899, 2418154978600875, 22091513472216108, 220206294709791833

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 6 of A197250

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210