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 A204603 Number of (n+2)X6 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally, vertically or nw-to-se diagonally exactly one way 1
 2275645, 4820300, 5260434, 10978524, 69792825, 774393122, 4518555426, 32448416953, 349259705982, 2010484777666, 14354494409473, 154409289786362, 888816408342414, 6346077122217149, 68263874184421262, 392943303332786626 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A204607 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 442*a(n-3) +43*a(n-6) for n>15 EXAMPLE Some solutions for n=3 ..2..0..0..0..2..1....2..2..1..2..0..1....2..2..2..2..0..2....0..2..1..2..2..0 ..1..1..1..0..1..0....0..1..2..0..1..0....0..1..2..1..1..0....1..0..1..2..1..1 ..0..0..2..1..0..2....1..0..1..2..2..1....0..0..1..2..2..1....2..2..0..1..2..2 ..0..1..2..2..1..1....0..2..0..1..2..2....0..1..0..1..2..2....0..1..2..0..1..2 ..1..0..1..2..2..2....0..1..2..0..1..2....1..0..2..0..1..2....1..0..1..2..2..0 CROSSREFS Sequence in context: A180940 A089445 A089446 * A176382 A347937 A339937 Adjacent sequences: A204600 A204601 A204602 * A204604 A204605 A204606 KEYWORD nonn AUTHOR R. H. Hardin Jan 17 2012 STATUS approved

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Last modified October 4 08:57 EDT 2023. Contains 365873 sequences. (Running on oeis4.)