A183669 Number of (n+1)X7 0..6 arrays with every 2x2 subblock summing to 12

1577065, 3791935, 10914505, 35840623, 129866905

Offset

1,1

Comments

Column 6 of A183672

Links

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

Example

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

Crossrefs

Sequence in context: A186920 A185804 A252881 * A234830 A262185 A104827

Adjacent sequences: A183666 A183667 A183668 * A183670 A183671 A183672

Keyword

nonn

Author

R. H. Hardin Jan 06 2011

Status

approved