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A262413 Number of (n+1)X(n+1) 0..1 arrays with each row divisible by 3 and column not divisible by 3, read as a binary number with top and left being the most significant bits. 0
2, 4, 270, 18228, 9401742, 15231780324, 114043973318270, 3210825131209677780, 376663000295700912108942, 173793136176160952800090974444, 324528460592527213101965898811701630 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A262420.
LINKS
EXAMPLE
Some solutions for n=4
..1..0..1..0..1....1..1..1..1..0....1..1..0..0..0....1..0..1..0..1
..0..1..1..0..0....0..0..0..0..0....1..1..0..1..1....0..1..1..0..0
..0..0..1..1..0....1..0..1..0..1....1..1..1..1..0....0..0..0..1..1
..0..0..0..0..0....1..1..0..0..0....1..0..0..1..0....1..1..0..1..1
..0..0..0..0..0....1..1..0..0..0....1..1..0..0..0....1..1..1..1..0
CROSSREFS
Cf. A262420.
Sequence in context: A271551 A058990 A343255 * A363039 A012437 A012434
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 22 2015
STATUS
approved

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Last modified May 27 18:57 EDT 2024. Contains 372880 sequences. (Running on oeis4.)