A186901 Number of (n+1)X9 binary arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants

14860, 19040, 122820, 608194, 2203303, 12599670, 85310077, 523902288, 2795274149, 16608468926, 108609778968, 679604170463, 3947135094182, 24085962638564, 153869560878987, 960883396722563, 5783252949932518

Offset

1,1

Comments

Column 8 of A186902

Links

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

Example

Some solutions for 3X9
..1..1..0..0..1..1..1..1..0....0..0..0..1..1..1..0..0..1
..0..1..1..1..1..0..0..1..1....0..0..1..1..0..1..1..0..0
..0..0..0..0..1..1..0..0..0....0..0..1..0..0..0..1..1..1

Crossrefs

Sequence in context: A177412 A209947 A023045 * A185486 A031815 A365257

Adjacent sequences: A186898 A186899 A186900 * A186902 A186903 A186904

Keyword

nonn

Author

R. H. Hardin Feb 28 2011

Status

approved