搜索: 编号:196963
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A196963号
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| nX4 0..4数组的数量,其中每个元素x等于其水平和垂直邻接数4,1,2,0,3,其中x=0,1,2,3,4 |
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+0 1
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4, 48, 562, 5465, 58639, 634241, 6764386, 72281541, 773637307, 8274218119, 88495136248, 946584068019, 10124647473535, 108293363518701, 1158313188626715, 12389366140294426, 132517210297246830
(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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每0紧挨着0 4,每1紧挨着1 1,每2紧挨着2 2,每3紧挨着3 0,每4紧挨着4 3
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链接
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公式
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经验公式:a(n)=6*a(n-1)+28*a(n-2)+243*a(-n3)+129*a(n4)-627*a*a(n-16)-13381328*a(n-17)+10523502*a-177460574*a(n-22)+198448096*a 885668(n-35)+20885154295(n-36)-2530524728(n-37)-39211330906(n-38)-3415305019(n-39)+47680035982*a(n-40)+22891413623*a(n-41)-62265733702*a*a(n-52)-1836219594*a(n-53)+9910595092*a(-n54)+27385297940*a(n55)+8628758094*a(n-56)-32441265689*a(n-57)-23930856404*a-960049045*a(n-69)+76723459*a(-n70)+239033946*a(n-71)-128970197*a(n72)+50836450*a(n-73)-5269426*a 87)-14819*a(n-88)+1800*a(n-89)+1710*a
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例子
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n=5的一些解
..0...0...3...0...1...0...0...0...0...2...0...0...0...0...1...0...0...0...1...0...0
..0..0..0..0....0..0..2..2....1..0..2..2....3..0..0..1....0..0..2..2
..1..1..0..3....1..0..2..2....1..3..0..0....0..3..0..1....0..0..2..2
..2..2..0..0....1..0..3..0....0..0..0..3....1..2..2..0....0..0..1..0
..2..2..0..0....0..0..0..0....0..3..0..0....1..2..2..0....0..0..1..0
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关键字
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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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