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A189951号 T(n,k)=1/4 n-k中n+1个非零数x(i)的排列数。。k,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

R.H.哈丁,n=1..609时的n,a(n)表

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...-3....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

上下文中的序列:A246275号 A209757型 A208932型*A209776型 A019594号 A085167号

相邻序列:A189948号 A189949号 A189950个*A189952号 A189953号 A189954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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