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A183706 Number of (n+1)X6 0..3 arrays with every 2X2 subblock nonsingular 1
5263608, 9154058448, 15840740585184, 27440831422595136, 47524363124861668992, 82311212150455188873408, 142559496381482334039141888, 246907689712402743573482286144 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A183710
LINKS
EXAMPLE
Some solutions for 3X6
..0..2..0..2..0..2....0..2..0..2..0..1....0..2..0..2..0..2....0..2..0..2..0..3
..2..0..2..0..2..1....1..0..2..0..2..0....3..0..2..0..2..0....2..0..2..0..2..3
..2..1..0..3..3..0....2..1..1..3..1..2....0..3..1..3..0..1....0..3..1..3..3..0
CROSSREFS
Sequence in context: A125780 A294988 A183746 * A236711 A184782 A116105
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 06 2011
STATUS
approved

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)