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 A250574 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column 8
 512, 3375, 3375, 21952, 39852, 21952, 140608, 463006, 463006, 140608, 884736, 5281190, 9583440, 5281190, 884736, 5545233, 59025322, 194160522, 194160522, 59025322, 5545233, 34645976, 656805747, 3844025984, 6967413024, 3844025984 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......512........3375..........21952............140608..............884736 ......3375.......39852.........463006...........5281190............59025322 .....21952......463006........9583440.........194160522..........3844025984 ....140608.....5281190......194160522........6967413024........243722971680 ....884736....59025322.....3844025984......243722971680......15037777879872 ...5545233...656805747....75733658665.....8480014708481.....922491768788283 ..34645976..7283102949..1486288137310...293803461491618...56336934011827612 .216000000.80572967431.29093999130722.10151010566609616.3430565103477146672 LINKS R. H. Hardin, Table of n, a(n) for n = 1..126 FORMULA Empirical for column k: k=1: [linear recurrence of order 19] k=2: [order 49] EXAMPLE Some solutions for n=2 k=4 ..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0 ..1..0..1..0..1..0....0..1..1..0..1..0....1..0..0..1..1..1....0..0..0..1..1..0 ..1..0..1..1..1..0....0..0..0..1..0..0....0..0..1..0..0..1....0..0..0..0..0..0 ..0..1..1..0..0..1....1..1..1..0..0..1....1..0..0..1..0..1....1..1..0..1..0..0 CROSSREFS Column 1 is A189155(n+2) Sequence in context: A254390 A253985 A253978 * A016995 A254092 A254085 Adjacent sequences: A250571 A250572 A250573 * A250575 A250576 A250577 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Nov 25 2014 STATUS approved

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Last modified April 22 21:00 EDT 2024. Contains 371906 sequences. (Running on oeis4.)