A263331 Number of (n+2) X (2+2) 0..2 arrays with each row and column divisible by 11, read as a base-3 number with top and left being the most significant digits.

1, 6, 38, 226, 1620, 12653, 100234, 805414, 6438451, 51548551, 412613602, 3302975055, 26430263612, 211464552217, 1691780506515, 13534316856401, 108275532447418, 866206527440326, 6929660831723566, 55437290533519366

Offset

1,2

Comments

Column 2 of A263333.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..0..1..0..2....0..0..0..0....0..1..0..2....2..0..0..1....0..2..1..1
..0..2..1..1....2..1..1..0....2..2..1..2....0..2..1..1....2..1..1..0
..2..2..1..2....0..1..0..2....0..0..0..0....0..0..0..0....1..1..2..2
..1..0..2..0....0..0..0..0....0..0..0..0....1..0..2..0....1..0..2..0
..1..1..2..2....1..0..2..0....1..0..2..0....0..1..0..2....0..0..0..0
..0..0..0..0....0..2..1..1....0..2..1..1....0..0..0..0....0..0..0..0

Crossrefs

Cf. A263333.

Sequence in context: A281803 A288030 A264502 * A026296 A037499 A037676

Adjacent sequences: A263328 A263329 A263330 * A263332 A263333 A263334

Keyword

nonn

Author

R. H. Hardin, Oct 15 2015

Status

approved