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 A268019 T(n,k)=Number of nXk 0..2 arrays with every repeated value in every row and column greater than or equal to the previous repeated value. 7
 3, 9, 9, 27, 81, 27, 78, 729, 729, 78, 222, 6084, 19683, 6084, 222, 622, 49284, 474552, 474552, 49284, 622, 1722, 386884, 10941048, 31831908, 10941048, 386884, 1722, 4719, 2965284, 240641848, 2012075697, 2012075697, 240641848, 2965284, 4719 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .....3..........9.............27................78.................222 .....9.........81............729..............6084...............49284 ....27........729..........19683............474552............10941048 ....78.......6084.........474552..........31831908..........2012075697 ...222......49284.......10941048........2012075697........343790697459 ...622.....386884......240641848......119453097281......54331933243657 ..1722....2965284.....5106219048.....6761580343329....8093513353675817 ..4719...22268961...105087226959...367501986337710.1146370541408659891 .12821..164378041..2107490863661.19300005472710895 .34575.1195430625.41332013859375 LINKS R. H. Hardin, Table of n, a(n) for n = 1..84 FORMULA Empirical for column k: k=1: a(n) = 6*a(n-1) -9*a(n-2) -4*a(n-3) +9*a(n-4) +6*a(n-5) +a(n-6) k=2: [order 15] k=3: [order 28] EXAMPLE Some solutions for n=3 k=4 ..0..1..1..0....0..2..1..2....0..0..2..1....0..0..2..2....0..1..2..1 ..0..1..0..0....0..2..1..1....0..1..0..0....1..1..1..2....0..1..1..1 ..0..1..2..1....1..0..2..0....0..1..0..1....1..0..1..0....1..2..2..1 CROSSREFS Sequence in context: A072404 A222996 A268026 * A228977 A223576 A125824 Adjacent sequences: A268016 A268017 A268018 * A268020 A268021 A268022 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 24 2016 STATUS approved

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Last modified March 30 18:15 EDT 2023. Contains 361622 sequences. (Running on oeis4.)