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 A223625 T(n,k)=Number of nXk 0..1 arrays with row sums nondecreasing and column sums unimodal 10
 2, 4, 3, 7, 11, 4, 11, 35, 26, 5, 16, 98, 147, 57, 6, 22, 260, 751, 574, 120, 7, 29, 643, 3560, 5303, 2114, 247, 8, 37, 1563, 15778, 45580, 35413, 7504, 502, 9, 46, 3631, 67030, 371569, 557432, 228401, 26050, 1013, 10, 56, 8407, 274631, 2888847, 8313608 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ..2....4......7........11.........16..........22...........29...........37 ..3...11.....35........98........260.........643.........1563.........3631 ..4...26....147.......751.......3560.......15778........67030.......274631 ..5...57....574......5303......45580......371569......2888847.....21682470 ..6..120...2114.....35413.....557432.....8313608....119085643...1641434223 ..7..247...7504....228401....6555965...180713080...4777458798.122344224851 ..8..502..26050...1437511...75329449..3825884676.187876185946 ..9.1013..88627...8898472..847768800.79714938310 .10.2036.296989..54437857.9404270528 .11.4083.985303.330381980 LINKS R. H. Hardin, Table of n, a(n) for n = 1..97 EXAMPLE Some solutions for n=3 k=4 ..0..0..0..0....0..1..0..0....1..0..0..0....1..1..0..0....0..0..0..0 ..0..1..1..0....0..1..1..0....0..0..1..0....1..1..1..1....0..1..1..0 ..0..1..1..0....0..1..0..1....0..1..0..0....1..1..1..1....1..1..1..1 CROSSREFS Column 1 is A000027(n+1) Column 2 is A000295(n+2) Row 1 is A000124 Sequence in context: A177877 A090568 A329877 * A166017 A257504 A207625 Adjacent sequences:  A223622 A223623 A223624 * A223626 A223627 A223628 KEYWORD nonn,tabl AUTHOR R. H. Hardin Mar 24 2013 STATUS approved

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Last modified July 1 22:23 EDT 2022. Contains 354984 sequences. (Running on oeis4.)