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 A204415 Number of (n+2)X8 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally or vertically, exactly one way 1
 254913953, 395943745, 422397021, 1122887052, 1364559057, 2050960896, 13168291392, 115434720000, 978463169280, 8406274955328, 67649125363200, 567027453966336, 4851531476034048, 39033529900574976, 327172939042111488 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 6 of A204417 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 577*a(n-3) for n>17 EXAMPLE Some solutions for n=3 ..0..1..2..0..1..0..2..0....2..1..0..0..0..0..0..1....2..1..1..1..0..2..2..0 ..2..0..1..2..1..1..0..1....1..0..1..0..0..1..0..0....0..1..2..0..1..0..1..1 ..0..1..0..1..2..2..1..0....1..1..2..1..0..2..1..1....0..0..1..2..2..1..0..2 ..0..1..2..0..1..2..2..1....0..1..2..2..1..1..2..1....2..0..0..1..2..2..1..2 ..0..0..1..2..0..1..2..2....0..0..1..2..2..0..1..2....0..1..2..0..1..2..2..1 CROSSREFS Sequence in context: A119860 A210683 A271111 * A246224 A205934 A231202 Adjacent sequences:  A204412 A204413 A204414 * A204416 A204417 A204418 KEYWORD nonn AUTHOR R. H. Hardin Jan 15 2012 STATUS approved

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Last modified July 30 19:15 EDT 2021. Contains 346359 sequences. (Running on oeis4.)