A183668 Number of (n+1)X6 0..6 arrays with every 2x2 subblock summing to 12

251991, 678265, 2163831, 7794409, 30722151, 129866905, 580718871, 2719942729, 13245504711, 66684138745, 345524027511

Offset

1,1

Comments

Column 5 of A183672

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for 3X6
..0..6..4..4..0..0....0..6..0..3..3..5....4..0..4..0..3..2....4..4..0..3..1..6
..6..0..2..2..6..6....5..1..5..4..2..2....4..4..4..4..5..2....0..4..4..5..3..2
..0..6..4..4..0..0....0..6..0..3..3..5....2..2..2..2..1..4....4..4..0..3..1..6

Crossrefs

Sequence in context: A271144 A058004 A272438 * A235025 A237106 A113567

Adjacent sequences: A183665 A183666 A183667 * A183669 A183670 A183671

Keyword

nonn

Author

R. H. Hardin Jan 06 2011

Status

approved