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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 Table of n, a(n) for n=1..11. 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 Adjacent sequences: A262410 A262411 A262412 * A262414 A262415 A262416 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.)