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 A223885 T(n,k)=Number of nXk 0..2 arrays with row sums unimodal and column sums inverted unimodal 4
 3, 9, 9, 22, 81, 22, 46, 564, 564, 46, 86, 3298, 11250, 3298, 86, 148, 17048, 187019, 187019, 17048, 148, 239, 80412, 2718572, 8872648, 2718572, 80412, 239, 367, 353485, 35673854, 367614623, 367614623, 35673854, 353485, 367, 541, 1469903, 431939504 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ...3.......9.........22...........46............86...........148 ...9......81........564.........3298.........17048.........80412 ..22.....564......11250.......187019.......2718572......35673854 ..46....3298.....187019......8872648.....367614623...13705619321 ..86...17048....2718572....367614623...43524907508.4637374623582 .148...80412...35673854..13705619321.4637374623582 .239..353485..431939504.469700382368 .367.1469903.4901224903 .541.5845411 .771 LINKS R. H. Hardin, Table of n, a(n) for n = 1..60 EXAMPLE Some solutions for n=3 k=4 ..1..0..1..2....0..1..0..2....1..1..0..1....1..1..0..0....1..0..2..1 ..2..1..1..1....2..2..1..1....1..1..1..0....2..2..1..1....0..2..1..1 ..2..0..0..2....2..0..2..1....0..0..1..0....1..1..2..2....2..2..1..2 CROSSREFS Column 1 is A223718 Sequence in context: A223742 A223725 A223831 * A223892 A223789 A223975 Adjacent sequences: A223882 A223883 A223884 * A223886 A223887 A223888 KEYWORD nonn,tabl AUTHOR R. H. Hardin Mar 28 2013 STATUS approved

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)