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(来自的问候整数序列在线百科全书!)
A252558型 T(n,k)=(n+2)X(k+2)0..3数组的个数,每个3X3子块行和对角线和等于1 2 4 6或7,每3X3列和反对角线总和不等于1 2 6或7 16
771, 1107, 747, 1510, 889, 832, 2443, 1752, 1477, 1265, 4284, 3178, 4006, 3084, 2162, 7755, 8508, 8329, 10585, 7144, 3761, 13917, 21797, 29158, 24336, 33635, 16327, 6855, 27182, 42359, 88899, 104515, 80820, 93997, 37430, 12549, 51187, 123304, 189777 (列表;桌子;图表;参考;;历史;文本;内部格式)
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表格开始
...771...1107....1510.....2443......4284.......7755.......13917........27182
...747....889....1752.....3178......8508......21797.......42359.......123304
...832...1477....4006.....8329.....29158......88899......189777.......680323
..1265...3084...10585....24336....104515.....386004......902276......3886119
..2162...7144...33635....80820....474384....2464176.....5882014.....35442488
..3761..16327...93997...242136...1818662...11035929....28350064....216831038
..6855..37430..270672...748814...6914968...52263770...145399017...1341388351
.12549..88797..884446..2418811..30571435..332967343...892449409..11588408619
.22875.207847.2534461..7241365.118748167.1520737989..4324294849..72250603584
.42485.481879.7459102.22589612.457814585.7411561448.22587330627.456879026434
链接
配方奶粉
k列的经验值:
k=1:n>60时[54阶线性递归]
k=2:[订单45],对于n>50
k=3:n>45时[顺序39]
k=4:对于n>60,[顺序54]
k=5:对于n>89,[订单84]
第n行的经验值:
n=1:n>60时[44阶线性递归]
n=2:对于n>32,[阶数27]
n=3:[订单24],对于n>31
n=4:对于n>30,[订单24]
n=5:[订单24],对于n>32
n=6:对于n>49,[订单42]
n=7:对于n>45,[订单36]
例子
n=4k=4的一些解
..2..0..2..2..0..0....0..2..2..0..2..2....2..3..2..2..3..2....2..3..2..2..0..2
..3..3..1..3..3..1....2..3..2..2..3..2....2..2..3..2..2..0....3..3..1..3..3..1
..3..2..2..0..2..2....3..3..1..3..0..1....1..0..0..1..3..3....3..2..2..0..2..2
..2..3..2..2..3..2....0..2..2..3..2..2....2..3..2..2..3..2....2..0..2..2..3..2
..0..3..1..3..3..1....2..3..2..2..3..2....2..2..3..2..2..0....3..3..1..3..0..1
..3..2..2..3..2..2....3..0..1..3..3..1....1..3..0..1..0..3....0..2..2..3..2..2
交叉参考
关键词
非n,
作者
R.H.哈丁2014年12月18日
状态
经核准的

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