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(来自的问候整数序列在线百科全书!)
A189951号 T(n,k)=-k.k中n+1个非零数x(i)的排列数的1/4,符号(x(i))*(|x(i)|mod x(i+1))之和等于零 16
1, 3, 2, 5, 8, 4, 8, 15, 22, 8, 10, 29, 63, 72, 16, 14, 39, 159, 384, 280, 32, 16, 61, 306, 1246, 2393, 1152, 64, 20, 75, 542, 3247, 9884, 13569, 4632, 128, 23, 103, 889, 6733, 31284, 73992, 72744, 17888, 256, 27, 124, 1350, 13034, 77459, 280284, 542353 (列表;桌子;图表;参考;;历史;文本;内部格式)
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表格开始
...1......3........5.........8.........10..........14..........16...........20
...2......8.......15........29.........39..........61..........75..........103
...4.....22.......63.......159........306.........542.........889.........1350
...8.....72......384......1246.......3247........6733.......13034........22220
..16....280.....2393......9884......31284.......77459......168737.......327880
..32...1152....13569.....73992.....280284......839968.....2095080......4678100
..64...4632....72744....542353....2514945.....9133420....26586582.....68081570
.128..17888...393006...4014514...23257218...101599137...346371666...1012894742
.256..67232..2206620..30195535..219695998..1148390301..4569825052..15245829657
512.251136.12731028.229483051.2090461716.13075280021.60616719909.230937539015
链接
例子
n=5k=3的一些解
.-2...-1...-2...-2...-2....2...-3...-2....1....3....2....2....2....3...-3...-3
.-2...-3....3....1....2....1....1...-1...-2...-3....1...-3....2....2....3...-2
.2….3…-2….1…-3….3….2…-1…-2….2….3….2…-2…-3….2…-2…-2…-2…-2…-2
.-1...-1....1....1...-2...-1...-1...-2...-1....3...-1....2...-1....3....3....1
..3....1....2...-1...-1...-3....3....1...-2...-2...-2...-1....3....2....1....2
.-2....2....2...-1...-3....1....1...-2....2...-3....1...-2...-2....2...-3....1
交叉参考
第1行是A006218号
关键词
非n,
作者
R.H.哈丁2011年5月2日
状态
经核准的

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