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 A278896 T(n,k)=Number of nXk 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes. 7
 0, 0, 0, 0, 0, 0, 1, 161, 161, 1, 56, 12392, 52424, 12392, 56, 728, 389640, 6888340, 6888340, 389640, 728, 5328, 7709668, 518626568, 2058210408, 518626568, 7709668, 5328, 27876, 112188011, 27351484380, 430110958155, 430110958155, 27351484380 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,8 COMMENTS Table starts .....0..........0..............0...................1......................56 .....0..........0............161...............12392..................389640 .....0........161..........52424.............6888340...............518626568 .....1......12392........6888340..........2058210408............430110958155 ....56.....389640......518626568........430110958155.........273949132717772 ...728....7709668....27351484380......69420349158080......143827898685401892 ..5328..112188011..1123462079180....9164480794983836....64434873104394812016 .27876.1300739542.38208069702548.1029371666008338780.25210227731914720632036 LINKS R. H. Hardin, Table of n, a(n) for n = 1..111 FORMULA Empirical for column k: k=1: [polynomial of degree 15] k=2: [polynomial of degree 60] EXAMPLE Some solutions for n=3 k=4 ..0..0..0..0. .0..1..3..1. .0..1..1..2. .0..0..2..2. .0..0..1..0 ..0..0..1..3. .0..1..3..2. .0..1..0..2. .0..1..0..3. .1..1..2..3 ..0..1..2..3. .0..0..1..2. .1..3..1..3. .0..3..0..0. .0..1..0..0 CROSSREFS Column 1 is A278604. Sequence in context: A159378 A172074 A171223 * A249397 A025350 A025342 Adjacent sequences:  A278893 A278894 A278895 * A278897 A278898 A278899 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Nov 30 2016 STATUS approved

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Last modified September 23 11:53 EDT 2020. Contains 337310 sequences. (Running on oeis4.)