A185774 Number of (n+1)X5 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum.

26784, 1151346, 48744342, 2171002788, 95851024672, 4212755548948, 184696487434352, 8130440303768416, 357605861336206826, 15723990359863559644, 691174683753522142476, 30395002285452611004698

Offset: 1

Author

R. H. Hardin Feb 03 2011

Keywords

• nonn

Comments

Column 4 of A185777

Examples

			Some solutions for 3X5
..0..1..0..1..0....0..0..0..0..1....0..1..2..2..2....0..2..2..1..1
..0..1..2..2..0....0..2..2..0..2....0..0..2..1..1....0..0..1..0..1
..1..2..1..2..0....0..1..1..2..0....1..1..1..2..1....1..0..2..2..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..39