A183679 Number of (n+1)X7 0..7 arrays with every 2x2 subblock summing to 14

4497760, 12267368, 40112416, 149494472, 614337760

Offset

1,1

Comments

Column 6 of A183680

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 3X7
..4..6..6..1..4..4..6....2..2..4..2..3..5..3....4..6..0..7..1..6..4
..2..2..0..7..2..4..0....6..4..4..4..5..1..5....0..4..4..3..3..4..0
..4..6..6..1..4..4..6....2..2..4..2..3..5..3....6..4..2..5..3..4..6

Crossrefs

Sequence in context: A339536 A319064 A344831 * A234793 A227040 A227039

Adjacent sequences: A183676 A183677 A183678 * A183680 A183681 A183682

Keyword

nonn

Author

R. H. Hardin Jan 06 2011

Status

approved