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 A238081 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 9
 256, 1592, 1592, 9884, 14456, 9884, 59772, 132316, 132316, 59772, 378708, 1191324, 1781008, 1191324, 378708, 2285576, 10449784, 19616408, 19616408, 10449784, 2285576, 14349272, 92535056, 242829762, 336372000, 242829762, 92535056 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ........256.........1592...........9884.............59772..............378708 .......1592........14456.........132316...........1191324............10449784 .......9884.......132316........1781008..........19616408...........242829762 ......59772......1191324.......19616408.........336372000..........6222330452 .....378708.....10449784......242829762........6222330452........182752988334 ....2285576.....92535056.....2981477664......119781203860.......5032066269920 ...14349272....831852752....39928365220.....2220366275092.....146517793924666 ...86693008...7439225960...464223535984....40590407292556....4129457221662176 ..546582828..65951303220..5897707478324...760523734925120..123794073907866626 .3300593268.586352178784.71387175302572.14540553425940596.3439338548069808556 LINKS R. H. Hardin, Table of n, a(n) for n = 1..144 FORMULA Empirical for column k: k=1: a(n) = 17*a(n-2) +736*a(n-4) +2353*a(n-6) +2483*a(n-8) +800*a(n-10) for n>11 k=2: [order 25] for n>26 k=3: [order 60] for n>63 EXAMPLE Some solutions for n=2 k=4 ..0..0..0..0..1....1..1..0..2..2....1..0..1..2..2....0..1..3..0..2 ..2..1..0..0..0....1..1..0..2..1....0..2..3..2..1....2..3..3..1..0 ..2..2..1..0..2....1..2..1..3..3....1..3..1..0..2....1..2..2..1..3 CROSSREFS Sequence in context: A237672 A237921 A237915 * A238074 A251974 A250429 Adjacent sequences:  A238078 A238079 A238080 * A238082 A238083 A238084 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Feb 17 2014 STATUS approved

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Last modified June 16 06:46 EDT 2019. Contains 324145 sequences. (Running on oeis4.)