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A209344型 |
| T(n,k)是标记有数字-k.k的n珠项链的数量,允许反转,且总和为零,一行中没有三个珠子相等。 |
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13
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1, 1, 2, 1, 3, 1, 1, 4, 4, 4, 1, 5, 7, 15, 5, 1, 6, 12, 35, 40, 14, 1, 7, 17, 72, 145, 146, 21, 1, 8, 24, 128, 400, 770, 514, 51, 1, 9, 31, 205, 883, 2698, 4029, 2032, 102, 1, 10, 40, 311, 1724, 7358, 18646, 22739, 8076, 249, 1, 11, 49, 448, 3045, 16968, 62853, 136000
(列表;桌子;图表;参考;听;历史;文本;内部格式)
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抵消
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1,3
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评论
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表格开始
..1....1.....1......1......1.......1.......1........1........1........1
..2....3.....4......5......6.......7.......8........9.......10.......11
..1....4.....7.....12.....17......24......31.......40.......49.......60
..4...15....35.....72....128.....205.....311......448......618......829
..5...40...145....400....883....1724....3045.....5026.....7827....11684
.14..146...770...2698...7358...16968...34720....64942...113288...186906
.21..514..4029..18646..62853..172610..409199...870122..1699831..3104474
.51.2032.22739.136000.563109.1830872.5016681.12099880.26438711.53392286
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链接
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配方奶粉
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第n行的经验值:
n=2:a(k)=2*a(k-1)-a(k-2)。
n=3:a(k)=2*a(k-1)-2*a(k-3)+a(k-4)。
n=4:a(k)=3*a(k-1)-3*a(k-2)+2*a(k3)-3*a(k-4)+3*a(k-5)-a(k-6)。
n=5:a(k)=2*a(k-1)+a(k-2)-3*a(k-3)-a(k-4)+a。
n=6:a(k)=4*a(k-1)-5*a(k-2)+a(k-3)+a(k-4)+a(k-5)+a(k-6)-5*a(k-7)+4*a(k-8)-a(k-9)。
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例子
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n=6,k=8的一些解:
.-4...-4...-4...-8...-7...-6...-6...-8...-7...-8...-7...-7...-8...-8...-8...-4
.-3...-3...-3...-3....0....1....1....0...-2....0....1...-2....3...-8...-4...-4
..5...-1...-4....4...-4...-1....1....1....8....3....0....8...-4...-4....0...-2
.-2....3...-3....1....2....8....6....4...-5....5...-6....1....0....6....7....5
.-1...-1....6....3....3...-5...-6....0....5...-4....8...-7....6....7....3....7
..5....6....8....3....6....3....4....3....1....4....4....7....3....7....2...-2
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交叉参考
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关键词
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作者
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状态
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经核准的
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