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 A236669 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock 6
 81, 452, 452, 2608, 3720, 2608, 14760, 30352, 30352, 14760, 84948, 250708, 368090, 250708, 84948, 484400, 2079296, 4434788, 4434788, 2079296, 484400, 2771648, 17174856, 55108806, 82202172, 55108806, 17174856, 2771648, 15802528, 141244420 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ........81.........452...........2608...........14760...........84948 .......452........3720..........30352..........250708.........2079296 ......2608.......30352.........368090.........4434788........55108806 .....14760......250708........4434788........82202172......1533811128 .....84948.....2079296.......55108806......1533811128.....44409371442 ....484400....17174856......664310024.....28390507456...1243675317240 ...2771648...141244420.....8131629834....520848836744..35244374739432 ..15802528..1164128912....98186159604...9689359336344.998449131759624 ..90361616..9621726624..1210293445866.180751835666464 .516384576.79482813380.14656239076752 LINKS R. H. Hardin, Table of n, a(n) for n = 1..84 FORMULA Empirical for column k: k=1: a(n) = 2*a(n-1) +436*a(n-4) +888*a(n-5) +2304*a(n-6) +5760*a(n-7) k=2: [order 15] EXAMPLE Some solutions for n=2 k=4 ..2..0..0..2..2....1..0..2..2..1....1..0..0..2..1....0..0..0..1..0 ..1..2..2..2..1....1..0..0..0..2....0..0..0..0..2....0..0..1..0..2 ..2..1..0..0..1....2..1..1..0..0....1..1..2..2..2....1..2..1..1..1 CROSSREFS Sequence in context: A204223 A205215 A206223 * A205208 A236664 A253533 Adjacent sequences: A236666 A236667 A236668 * A236670 A236671 A236672 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 29 2014 STATUS approved

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Last modified August 6 00:15 EDT 2024. Contains 374957 sequences. (Running on oeis4.)