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A262325 Number of (n+1)X(n+1) 0..1 arrays with each row and column divisible by 3, read as a binary number with top and left being the most significant bits. 1
2, 5, 90, 2399, 570922, 394241389, 1456404454010, 19392931688071671, 1134083007177482717802, 256890679674803015904974405, 239672757231397671662393429466490 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A262332.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..12

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A262332.

Sequence in context: A093308 A319230 A215797 * A290871 A162569 A120800

Adjacent sequences:  A262322 A262323 A262324 * A262326 A262327 A262328

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 18 2015

STATUS

approved

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Last modified July 11 17:52 EDT 2020. Contains 335626 sequences. (Running on oeis4.)