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 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
 1, 6, 38, 226, 1620, 12653, 100234, 805414, 6438451, 51548551, 412613602, 3302975055, 26430263612, 211464552217, 1691780506515, 13534316856401, 108275532447418, 866206527440326, 6929660831723566, 55437290533519366 (list; graph; refs; listen; history; text; internal format)
 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

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Last modified February 26 01:28 EST 2020. Contains 332270 sequences. (Running on oeis4.)