A185991 1/128 the number of (n+2)X9 binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace

23840, 4038360, 333538097, 32992227496, 3151659956721, 306579200951455, 29671205957160911, 2878184444421565799, 278983544664468587224, 27048807693952318580843, 2622411427147271534732564

Offset

1,1

Comments

Column 7 of A185993

Links

R. H. Hardin, Table of n, a(n) for n = 1..61

Example

Some solutions for 4X9
..0..0..1..0..0..1..0..0..0....0..0..0..1..1..1..1..0..1
..0..0..0..0..1..1..0..0..0....0..0..0..0..0..1..0..0..1
..0..0..0..0..0..0..0..0..1....0..0..0..0..0..1..0..0..0
..0..0..0..0..0..1..1..1..1....0..0..0..0..0..0..1..0..1

Crossrefs

Sequence in context: A066234 A332313 A237691 * A251904 A239177 A204359

Adjacent sequences: A185988 A185989 A185990 * A185992 A185993 A185994

Keyword

nonn

Author

R. H. Hardin Feb 08 2011

Status

approved