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A185741 Number of (n+1)X(n+1) binary arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace 0
0, 104, 4056, 458320, 145680504, 130602553784, 331658427568088, 2382038434840423712, 48425731027864802502768, 2786235185788797488510439424 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A185750
LINKS
EXAMPLE
Some solutions for 3X3
..1..1..0....0..0..0....0..0..0....1..0..0....0..0..1....0..1..1....1..1..0
..0..1..1....1..1..1....0..0..0....0..0..1....1..1..1....1..1..1....1..1..1
..0..1..0....1..0..0....1..1..1....0..1..1....1..0..0....1..0..1....0..1..1
CROSSREFS
Sequence in context: A298460 A299553 A187530 * A299333 A007267 A300174
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 01 2011
STATUS
approved

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Last modified June 17 09:44 EDT 2024. Contains 373444 sequences. (Running on oeis4.)