A195976 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,3,4 for x=0,1,2,3,4.

16, 78, 134, 256, 519, 1280, 2718, 5830, 12799, 28969, 64536, 144480, 323887, 730358, 1647281, 3720888, 8406355, 19026721, 43091379, 97668401, 221445855, 502417344, 1140305840, 2589100946, 5880051614, 13357939515, 30351874554, 68979138844

Offset: 1

Author

R. H. Hardin Sep 25 2011

Keywords

• nonn

Comments

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

Column 6 of A195978

Examples

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

Links

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