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(来自的问候整数序列在线百科全书!)
A317815型 T(n,k)=nXk 0..1数组的数量,每个元素在水平、垂直或反对角相邻元素中不等于0、2或3,左上角元素为零。 8
1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 3, 2, 3, 1, 1, 5, 4, 4, 5, 1, 1, 10, 5, 7, 5, 10, 1, 1, 23, 8, 34, 34, 8, 23, 1, 1, 54, 9, 56, 38, 56, 9, 54, 1, 1, 131, 28, 77, 94, 94, 77, 28, 131, 1, 1, 321, 44, 228, 230, 142, 230, 228, 44, 321, 1, 1, 789, 60, 551, 552, 434, 434, 552, 551, 60, 789, 1 (列表;桌子;图表;参考;;历史;文本;内部格式)
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1,5
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表格开始
.1...1..1...1....1....1.....1.....1......1......1.......1.......1........1
.1...2..2...3....5...10....23....54....131....321.....789....1943.....4788
.1...2..2...4....5....8.....9....28.....44.....60.....118.....256......409
.1...3..4...7...34...56....77...228....551...1300....3171....6929....16038
.1...5..5..34...38...94...230...552...1397...3674....9184...23878....60774
.1..10..8..56...94..142...434..1071...2279...6087...15953...40210...104488
.1..23..9..77..230..434..1575..4232..10738..32307...97258..284543...844473
.1..54.28.228..552.1071..4232.13712..35752.110093..343180.1067786..3331483
.1.131.44.551.1397.2279.10738.35752.112854.377515.1253484.4165180.14146154
链接
配方奶粉
k列的经验值:
k=1:a(n)=a(n-1)
k=2:a(n)=2*a(n-1)+a(n-2)+a
k=3:n>19时[订单17]
k=4:对于n>52,[订单48]
例子
n=5 k=4的一些解
..0..0..0..0. .0..1..1..0. .0..1..1..1. .0..1..0..1. .0..1..1..1
..0..0..0..0. .1..0..0..1. .1..0..0..0. .1...0...0...0。1..0..0..0
..0..0..0..0. .0..0..1..0. .0..0..0..1. .1..0..1..1. .0..0..1..1
..0..0..0..0. .1..1..1..0. .1..1.1..1.0。0..1..1..0. .1..1..1..0
..0..0..0..0. .0..1..0..1. .0..1..0..1. .1..0..0..1. .0..0..0..1
交叉参考
关键词
非n,
作者
R.H.哈丁,2018年8月7日
状态
经核准的

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