A186935 Number of (n+1)X6 binary arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces

344, 6848, 46960, 400192, 3026432, 25314744, 199197496, 1627815216, 12959411184, 105094646680, 841526384968, 6794773877768, 54572082394368, 439857772138872, 3537187036922272, 28484975285666720, 229175684311650976

Offset

1,1

Comments

Column 5 of A186939

Links

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

Example

Some solutions for 4X6
..1..1..0..1..1..1....0..0..0..0..1..1....1..0..1..1..1..1....1..1..1..0..0..0
..1..1..0..1..1..1....0..0..1..1..1..1....0..0..1..0..1..1....1..1..1..1..1..1
..1..1..0..0..1..1....0..0..1..1..0..1....1..0..0..0..1..0....1..1..0..0..1..1
..0..1..0..0..1..0....1..0..1..1..0..1....1..0..1..0..0..0....0..1..1..1..1..1

Crossrefs

Sequence in context: A246630 A250921 A262791 * A340173 A115221 A065499

Adjacent sequences: A186932 A186933 A186934 * A186936 A186937 A186938

Keyword

nonn

Author

R. H. Hardin Mar 01 2011

Status

approved