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A252876号 |
| T(n,k)=具有左上0和右下n+k-4的n X k非负整数数组的数量,并且值随着每一步向右或向下递增0或1。 |
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11
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0, 0, 0, 1, 1, 1, 3, 8, 8, 3, 6, 26, 44, 26, 6, 10, 61, 153, 153, 61, 10, 15, 120, 413, 615, 413, 120, 15, 21, 211, 949, 1953, 1953, 949, 211, 21, 28, 343, 1948, 5281, 7313, 5281, 1948, 343, 28, 36, 526, 3676, 12686, 23203, 23203, 12686, 3676, 526, 36, 45, 771, 6497, 27805, 64920, 85801, 64920, 27805, 6497, 771, 45
(列表;桌子;图表;参考;听;历史;文本;内部格式)
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抵消
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1,7
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评论
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表格开始
..0...0.....1......3......6......10.......15........21........28.........36
..0...1.....8.....26.....61.....120......211.......343.......526........771
..1...8....44....153....413.....949.....1948......3676......6497......10894
..3..26...153....615...1953....5281....12686.....27805.....56624.....108549
..6..61...413...1953...7313...23203....64920....164399....383735.....836797
.10.120...949...5281..23203...85801...277585....806347...2142634....5281314
.15.211..1948..12686..64920..277585..1030330...3407823..10237249...28340232
.21.343..3676..27805.164399..806347..3407823..12742873..42993671..132872804
.28.526.6497.56624.383735.2142634.10237249.42993671.1617937617.555632319
.36.771.10894.108549.836797.5281314.28340232.132872804.555632319.2105918045
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链接
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配方奶粉
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k列的经验值:
k=1:a(n)=(1/2)*n^2-(3/2)*n+1
k=2:a(n)=(1/24)*n^4+(5/12)*n|3-(13/24)*n*2-(11/12)*n+1,
k=3:[六次多项式]
k=4:[八次多项式]
k=5:[10次多项式]
k=6:[十二次多项式]
k=7:[14次多项式]
经验:用“n+k-3”代替“n+k-4”T(n,k)=二项式(n+k,k)-2。
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例子
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n=3k=4的一些解
..0..1..1..1....0..0..1..1....0..1..2..3....0..0..1..1....0..0..1..1
..1..1..2..2....0..1..1..2....1..1..2..3....0..0..1..2....0..1..2..2
..1..1..2..3....1..2..2..3....1..2..2..3....1..1..2..3....1..1..2..3
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交叉参考
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关键词
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作者
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状态
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经核准的
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