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A200789号 |
| 7个元素的0..n数组x(0..6)的数量没有任何连续增加。 |
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128, 1791, 11704, 50775, 169884, 474566, 1160616, 2562633, 5217520, 9944957, 17946864, 30927871, 51238812, 82045260, 127523120, 193083297, 285627456, 413836891, 588496520, 822856023, 1133030140, 1538440146, 2062298520
(列表;图表;参考;听;历史;文本;内部格式)
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抵消
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1,1
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评论
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链接
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配方奶粉
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经验:a(n)=(2017/5040)*n^7+(1427/360)*n^6+(5759/360)*n^5+(607/18)*n^4+(28459/720)*n^3+(9113/360)*n^2+(848/105)*n+1。
推测来自科林·巴克2017年10月15日:(开始)
以下公式与上述推测公式一致。
总尺寸:x*(128+767*x+960*x^2+123*x^3+60*x^4-28*x^5+8*x^6-x^7)/(1-x)^8。
a(n)=(5040+40704*n+127582*n^2+199213*n^3+169960*n^4+80626*n^5+19978*n^6+2017*n^7)/5040。
当n>8时,a(n)=8*a(n-1)-28*a。
(结束)
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例子
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n=3的一些解
..1....0....2....0....0....3....0....1....0....2....2....2....0....3....1....0
..2....2....3....0....2....3....3....1....3....2....0....2....2....1....3....3
..0....0....3....1....2....2....0....0....2....0....0....2....0....1....3....2
..1....1....0....1....3....1....1....0....3....2....3....0....0....0....2....1
..0....1....3....0....1....3....0....0....1....1....2....3....2....3....0....0
..1....3....0....0....1....3....0....1....1....3....3....2....2....0....2....0
..1....1....0....2....1....1....0....0....3....0....0....2....0....2....1....3
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交叉参考
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关键词
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非n
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作者
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状态
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经核准的
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