A184228 Half the number of (n+1)X7 0..3 arrays with every 2X2 subblock diagonal sum differing from its antidiagonal sum by more than 3

6966, 541936, 22904858, 1292899174, 64280495958, 3390680573862, 174220807520698, 9060575120369248, 468666562795511632, 24302116797857458570, 1258755953102506894388, 65231670365062829035438

Offset

1,1

Comments

Column 6 of A184231

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 3X7
..0..2..0..1..0..3..0....2..0..1..0..2..0..3....0..2..0..2..0..3..0
..3..0..3..0..3..0..3....0..3..0..3..1..3..0....3..1..3..1..3..0..1
..1..3..1..3..0..3..2....2..0..2..0..3..0..2....0..3..1..3..0..3..0

Crossrefs

Sequence in context: A028542 A263287 A234111 * A050225 A305718 A237237

Adjacent sequences: A184225 A184226 A184227 * A184229 A184230 A184231

Keyword

nonn

Author

R. H. Hardin Jan 10 2011

Status

approved