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 A250507 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with nondecreasing medians of every three consecutive values in every row and column 3
 19683, 300763, 300763, 4251528, 9777655, 4251528, 59776471, 289735900, 289735900, 59776471, 729000000, 8566581775, 17751271450, 8566581775, 729000000, 8316073576, 211068335312, 1088029714752, 1088029714752 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......19683........300763........4251528........59776471......729000000 ......300763.......9777655......289735900......8566581775...211068335312 .....4251528.....289735900....17751271450...1088029714752.53509194753023 ....59776471....8566581775..1088029714752.138575157528960 ...729000000..211068335312.53509194753023 ..8316073576.4788105206370 .92959677000 LINKS R. H. Hardin, Table of n, a(n) for n = 1..31 EXAMPLE Some solutions for n=1 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..2..1..0..2....1..1..1..1..0..1....0..2..0..0..0..1....0..2..1..0..1..2 ..0..2..0..2..2..0....0..1..2..1..1..0....0..1..1..1..0..1....1..2..1..1..2..0 CROSSREFS Sequence in context: A067489 A250510 A250508 * A250505 A186625 A186622 Adjacent sequences:  A250504 A250505 A250506 * A250508 A250509 A250510 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Nov 24 2014 STATUS approved

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Last modified November 29 01:40 EST 2021. Contains 349416 sequences. (Running on oeis4.)