A251371 Number of (n+1)X(6+1) 0..2 arrays with every 2X2 subblock summing to 1 2 3 4 5 6 or 7.

4159927, 8017100977, 15431888950873, 29707797738391051, 57189617044768555919, 110094177769643072247073, 211939290252887391404913105, 407998534122358956249893397419

Offset: 1

Author

R. H. Hardin, Dec 01 2014

Keywords

• nonn

Comments

Column 6 of A251373

Examples

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

Links

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