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 A222931 T(n,k)=Number of nXk 0..3 arrays with successive rows and columns fitting to straight lines with strictly increasing slope, with a single point array taken as having zero slope 2
 4, 0, 0, 0, 106, 0, 0, 376, 376, 0, 0, 769, 10896, 769, 0, 0, 904, 142442, 142442, 904, 0, 0, 564, 772576, 26220153, 772576, 564, 0, 0, 144, 2157798, 1315814376, 1315814376, 2157798, 144, 0, 0, 0, 2301248, 60536955488, 263793650432, 60536955488, 2301248 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .4...0.......0.............0..............0..............0................0 .0.106.....376...........769............904............564..............144 .0.376...10896........142442.........772576........2157798..........2301248 .0.769..142442......26220153.....1315814376....60536955488....1739420916038 .0.904..772576....1315814376...263793650432.56867774044408.5830357357097696 .0.564.2157798...60536955488.56867774044408 .0.144.2301248.1739420916038 .0...0.......0 .0...0 .0 LINKS R. H. Hardin, Table of n, a(n) for n = 1..60 EXAMPLE Some solutions for n=3 k=4 ..2..2..0..0....2..1..2..0....3..1..2..0....2..1..2..1....3..2..1..0 ..3..3..3..2....2..0..1..3....3..0..2..3....2..2..2..2....3..2..0..3 ..2..3..2..3....0..1..3..2....1..0..2..2....1..1..3..3....0..1..1..1 CROSSREFS Sequence in context: A258644 A169770 A287633 * A258645 A222953 A101193 Adjacent sequences: A222928 A222929 A222930 * A222932 A222933 A222934 KEYWORD nonn,tabl AUTHOR R. H. Hardin Mar 09 2013 STATUS approved

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Last modified December 10 08:44 EST 2023. Contains 367701 sequences. (Running on oeis4.)