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A184647 Number of (n+2)X4 0..3 arrays with each 3X3 subblock having a positive determinant 1
3745509, 398829619, 40374310135, 3941878848972, 398138249828378, 39962151945685497, 3975989966207625128, 398772531392899582485, 39987193655119991432064, 3990964696857966996964418 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A184649

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..43

EXAMPLE

Some solutions for 6X4

..0..0..2..0....0..0..2..0....0..0..2..0....0..0..2..0....0..0..2..0

..1..0..0..1....1..0..0..1....1..0..0..1....1..0..0..1....1..0..0..1

..0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0

..1..0..1..0....0..0..1..1....1..0..1..0....0..0..1..2....2..0..1..0

..2..1..1..3....1..1..0..3....3..1..0..1....1..0..0..3....2..1..0..3

..1..3..1..3....0..1..1..2....1..2..2..0....0..2..2..3....2..2..2..1

CROSSREFS

Sequence in context: A254489 A253861 A114683 * A233753 A333744 A127879

Adjacent sequences:  A184644 A184645 A184646 * A184648 A184649 A184650

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 18 2011

STATUS

approved

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Last modified September 25 12:12 EDT 2022. Contains 356984 sequences. (Running on oeis4.)