A183708 Number of (n+1)X8 0..3 arrays with every 2X2 subblock nonsingular

871232952, 17600152230096, 353161421431958880, 7096672408605671392416, 142559496381482334039141888, 2863979225676951763894821578784, 57535515249805594625825370853448832

Offset

1,1

Comments

Column 7 of A183710

Links

R. H. Hardin, Table of n, a(n) for n = 1..14

Example

Some solutions for 3X8
..0..2..0..2..0..1..3..2....0..2..0..2..0..1..3..1....0..2..0..2..0..1..3..1
..2..0..2..0..1..3..3..3....2..0..2..0..1..2..1..0....2..0..2..0..1..0..3..2
..0..1..0..1..0..2..0..1....0..1..0..1..2..0..2..3....0..1..0..1..0..3..3..0

Crossrefs

Sequence in context: A204141 A214557 A214558 * A210299 A178557 A157798

Adjacent sequences: A183705 A183706 A183707 * A183709 A183710 A183711

Keyword

nonn

Author

R. H. Hardin Jan 06 2011

Status

approved