搜索： 编号：a209485
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A209485型
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| T（n，k）是标记有数字-k.k的n珠项链的数量，允许反转，求和为零，避免了模式zz+1 z+2和zz-1 z-2。 |
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12
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1, 1, 2, 1, 3, 1, 1, 4, 4, 4, 1, 5, 7, 15, 4, 1, 6, 12, 35, 38, 11, 1, 7, 17, 72, 140, 136, 15, 1, 8, 24, 128, 390, 731, 458, 43, 1, 9, 31, 205, 866, 2606, 3740, 1781, 77, 1, 10, 40, 311, 1702, 7179, 17771, 20888, 6912, 199, 1, 11, 49, 448, 3014, 16660, 60778, 128598, 118137
(列表；桌子；图表；参考；听；历史；文本；内部格式)
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偏移
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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.......1
..2....3.....4......5......6.......7.......8........9.......10.......11......12
..1....4.....7.....12.....17......24......31.......40.......49.......60......71
..4...15....35.....72....128.....205.....311......448......618......829....1083
..4...38...140....390....866....1702....3014.....4984.....7774....11620...16716
.11..136...731...2606...7179...16660...34233....64220...112263...185506..292759
.15..458..3740..17771..60778..168453..401634...857433..1679810..3074315.5321674
.43.1781.20888.128598.541494.1778878.4907310.11891268.26069478.52776268
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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-3）-2*a（k-5）+2*a（k6）+a（k-8）-2-a（k-10）+a。
n=6:a（k）=5*a（k-1）-10*a（k-2）+11*a。
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例子
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n=6，k=6的一些解：
.-5...-4...-5...-6...-6...-5...-6...-4...-3...-6...-6...-3...-5...-5...-6...-4
..0....0...-2...-3...-2...-4...-5...-3...-1....5....2...-2....0....2...-2....2
.-2...-2....2....4....0...-1....4....0...-1...-5....0...-2...-3...-4....6...-4
..2....2...-2....3....1....5....3....4....1....0...-4....5....2....1...-4....4
..5....0....5...-2....1....0....4....3...-2....0....6....0....5....0....0...-4
..0....4....2....4....6....5....0....0....6....6....2....2....1....6....6....6
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