A183663 Number of (n+1)X(n+1) 0..6 arrays with every 2X2 subblock summing to 12

231, 5215, 100935, 1803007, 30722151

Offset

1,1

Comments

Diagonal of A183672

Links

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

Example

Some solutions for 3X3
..6..4..6....0..5..0....4..1..4....0..4..0....5..1..5....2..3..2....4..4..3
..1..1..1....3..4..3....3..4..3....5..3..5....4..2..4....1..6..1....0..4..1
..6..4..6....3..2..3....3..2..3....0..4..0....1..5..1....4..1..4....5..3..4

Crossrefs

Sequence in context: A211717 A029569 A152102 * A362429 A201957 A152500

Adjacent sequences: A183660 A183661 A183662 * A183664 A183665 A183666

Keyword

nonn

Author

R. H. Hardin Jan 06 2011

Status

approved