A204799 Number of (n+1)X8 0..1 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing

6740, 353975, 11096511, 398104735, 13302221086, 457771763592, 15605413576718, 534307699718747, 18258851926447654, 624736415868591570, 21375044526088828740, 731601924414291239552, 25041175446627781497200

Offset

1,1

Comments

Column 7 of A204800

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..0..0..0..1..0..0..1..0....1..1..1..0..1..0..1..0....1..1..1..0..0..1..0..0
..0..1..0..0..0..0..1..0....0..0..0..0..1..0..0..0....1..1..1..0..0..0..0..0
..0..1..0..0..0..0..0..0....0..0..1..0..1..0..1..1....0..0..0..0..0..1..0..0
..0..1..0..0..0..0..0..0....0..0..0..0..1..0..1..1....0..0..0..1..0..0..0..0
..0..0..0..1..0..1..1..0....1..1..1..0..1..0..0..0....0..0..0..1..0..0..1..1

Crossrefs

Sequence in context: A253349 A253356 A204615 * A151637 A031986 A147316

Adjacent sequences: A204796 A204797 A204798 * A204800 A204801 A204802

Keyword

nonn

Author

R. H. Hardin Jan 19 2012

Status

approved