login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A187138
Number of (n+1)X8 0..2 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces
0
332937, 189091422, 34994620836, 8616423081600, 1928394629936928, 456216633873575892
OFFSET
1,1
COMMENTS
Column 7 of A187140
EXAMPLE
Some solutions for 4X8
..1..1..2..1..0..2..2..2....1..1..1..2..2..2..2..1....1..1..0..0..1..0..2..1
..0..0..0..0..1..2..2..2....0..0..0..0..0..0..0..0....0..0..0..0..0..0..1..0
..0..0..0..1..1..2..2..2....0..0..0..1..2..0..0..0....0..0..0..1..0..0..0..1
..0..0..0..1..0..2..0..0....0..0..0..1..0..0..2..0....0..0..0..1..0..1..0..0
CROSSREFS
Sequence in context: A254358 A206658 A069337 * A185843 A261861 A234129
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 05 2011
STATUS
approved