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| A189498号 |
| T（n，k）=n+1个非零数x（i）in-k.k的排列数，楼层总和（x（i）/x（i+1））等于零 |
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16
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0, 2, 4, 6, 12, 0, 12, 38, 42, 12, 20, 78, 152, 136, 0, 30, 148, 462, 928, 550, 40, 42, 240, 1088, 3388, 4920, 1892, 0, 56, 380, 2128, 9394, 24806, 27508, 7384, 140, 72, 554, 3850, 22088, 85480, 182634, 152358, 26816, 0, 90, 788, 6474, 45892, 238836, 787412
(列表;桌子;图表;参考;听;历史;文本;内部格式)
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表格开始
...0......2........6........12.........20..........30...........42...........56
...4.....12.......38........78........148.........240..........380..........554
...0.....42......152.......462.......1088........2128.........3850.........6474
..12....136......928......3388.......9394.......22088........45892........86416
...0....550.....4920.....24806......85480......238836.......567774......1218778
..40...1892....27508....182634.....787412.....2642358......7269852.....17692662
...0...7384...152358...1350418....7250142....29261538.....93830584....260746932
.140..26816...852940..10077438...67449574...326423068...1218634086...3870426602
…0.103288.4796962.75593372.630466648.3664621084.15936391068.57837221756
.504.386928.27117826.569975518.5926141678.41363200538.209537582772.869215927390
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链接
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例子
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n=7 k=5的一些解
.-5...-5...-5...-5...-5...-4...-5...-5...-5...-4...-5...-5...-5...-5...-5...-5
.-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5
..3...-4....5....2....3...-4....4...-4...-3...-5....5....5....1....1....3....3
.-4....3...-4...-3....2...-3....3....5....1...-3...-4....2....4....2....1....2
.-2….2…-1…-4…-1…-5….1….4….1…-4…-2…-5….2….2…-1….5
..4....5...-3....4...-5...-2...-2....3....2...-5....2....3...-5...-4...-5...-5
..3...-2....2....2...-4....5...-4...-1....2....3....3....5...-5...-1....3...-2
..5...-1....5....1...-4...-2....3...-4...-4....4....3....5...-2...-4....3....2
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经核准的
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