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A263365 Number of (n+1)X(n+1) 0..2 arrays with each row and column divisible by 7, read as a base-3 number with top and left being the most significant digits. 0
1, 2, 82, 24711, 84790557, 2535097569590 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A263373.

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A263373.

Sequence in context: A246002 A063270 A087617 * A140157 A285689 A139867

Adjacent sequences:  A263362 A263363 A263364 * A263366 A263367 A263368

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 16 2015

STATUS

approved

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Last modified October 16 06:14 EDT 2021. Contains 348040 sequences. (Running on oeis4.)