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A211726号 |
| n-+1个元素的-3..3个数组x(i)的数量i=1..n+1,集合{t,u,v在0,1}中((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)),每个i,j,k<=n具有两个、三个、四个或五个不同的值。 |
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1
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48, 118, 254, 516, 1024, 2002, 3898, 7562, 14676, 28484, 55362, 107750, 210032, 410146, 802044, 1571350, 3082320, 6056992, 11914916, 23476260, 46297036, 91432582, 180706966, 357595598, 708081486, 1403597900, 2783755026, 5526116978
(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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链接
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配方奶粉
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经验:a(n)=5*a(n-1)-36*a(n-3)+41*a(-n4)+82*a(n5)-151*a。
经验公式:2*x*(24-61*x-168*x^2+487*x^3+362*x^4-1374*x^5-189*x^6+1681*x^7-212*x^8-857*x^9+224*x^10+148*x^11-52*x^12)/(1-x)*(1-2*x)*2*x^4))-科林·巴克2018年7月20日
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例子
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n=5的一些解决方案:
.-1....2....2....1...-2....1....2...-1....2....0....0....3....1...-2....2....0
.-1....0....2....1....0...-1....3...-1...-2...-3....2...-3....3....0...-3....3
..1....2...-2...-1...-2...-1....2....1...-2....0...-3....3....1....1....2....0
..1....0...-2...-1....2...-1....1...-1....2...-3....2...-3....3....0....0....3
..1…-1…-2…-1….2…-1….0….1….2….3…-3…-3….1….2…-3
..1....0....2....1...-2...-1...-1...-1....2....0....2....3....3...-1....0...-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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