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 A237488 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum minus the lower median of every 2X2 subblock equal 7
 256, 1464, 1464, 8770, 15898, 8770, 55318, 180730, 180730, 55318, 357516, 2218016, 3903294, 2218016, 357516, 2371070, 27849668, 92508252, 92508252, 27849668, 2371070, 15989568, 361041844, 2218452183, 4269381134, 2218452183, 361041844 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......256.........1464............8770..............55318...............357516 ......1464........15898..........180730............2218016.............27849668 ......8770.......180730.........3903294...........92508252...........2218452183 .....55318......2218016........92508252.........4269381134.........195900496272 ....357516.....27849668......2218452183.......195900496272.......16931153946501 ...2371070....361041844.....54882960676......9290034002140.....1516655769265371 ..15989568...4724446414...1356262078497....435555926502332...133299196435954608 .109427750..62643477220..33916082423836..20718223122880912.11926329656540065908 .756426182.833223795952.845731963650019.977441661859620206 LINKS R. H. Hardin, Table of n, a(n) for n = 1..84 FORMULA Empirical for column k: k=1: [linear recurrence of order 30] k=2: [order 88] EXAMPLE Some solutions for n=2 k=4 ..0..0..1..0..2....0..0..1..0..1....0..0..0..3..3....0..0..2..0..3 ..0..2..3..1..3....2..0..2..3..3....0..3..1..0..0....1..2..0..1..2 ..1..3..3..2..0....2..0..1..2..1....1..0..0..3..3....3..0..1..3..3 CROSSREFS Sequence in context: A237219 A237951 A237946 * A237482 A237150 A237143 Adjacent sequences: A237485 A237486 A237487 * A237489 A237490 A237491 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Feb 08 2014 STATUS approved

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Last modified February 23 21:39 EST 2024. Contains 370288 sequences. (Running on oeis4.)