A185486 Number of (n+1)X9 binary arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant

14860, 1642258, 104300522, 8249951270, 596127705496, 44794190542169, 3312295977303361, 246617622494198862, 18309597796319735490, 1361005199466774826914, 101116081602410498451624

Offset

1,1

Comments

Column 8 of A185487

Links

R. H. Hardin, Table of n, a(n) for n = 1..21

Example

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

Crossrefs

Sequence in context: A209947 A023045 A186901 * A031815 A365257 A235236

Adjacent sequences: A185483 A185484 A185485 * A185487 A185488 A185489

Keyword

nonn

Author

R. H. Hardin Jan 28 2011

Status

approved