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A201066号 |
| 每行和每列向右和向下不减少的nX2 0..6数组的数量,以及每个值在彼此之间的实例数 |
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1
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21, 70, 35, 77, 749, 972, 127, 3034, 7161, 2170, 3258, 24178, 22584, 1925, 44526, 93370, 24434, 32166, 212694, 174093, 12492, 282808, 559380, 136472, 168016, 1042800, 794792, 51945, 1159645, 2215350, 518715, 613149, 3656445, 2665100
(列表;图表;参考;听;历史;文本;内部格式)
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偏移
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1,1
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评论
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链接
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配方奶粉
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经验:a(n)=7*a(n-7)-21*a(n-14)+35*a(n-21)-35*a(n-28)+21*a(n-35)-7*a(n-42)+a(n-49)
n模7的子序列=1,2,3,4,5,6,0
p=(n+6)/7:a(n)=(5887/60)*p^6-(799/6
q=(n+5)/7:a(n)=(5887/36)*q^6-(673/6)*q^5+(151/9)*qq^4+(13/6)*q ^3-(11/36)*q^2
r=(n+4)/7:a(n)=(5887/180)*r^6+(5/2)*r_5~(7/36)*r_24~(1/90)*r_2
s=(n+3)/7:a(n)=(5887/180)*s^6+
t=(n+2)/7:a(n)=(5887/36)*t^6+(925/3)*t*5+(7489/36)*t^4+(121/2)*t|3+(143/18)*t~2+(2/3)*t
u=(n+1)/7:a(n)=(5887/60)*u^6+(862/3)*u*5+(4007/12)*u_4+(1153/6)*u_3+(817/15)*u_2+6*u
v=(n+0)/7:a(n)=(841/180)*v^6+(101/5)*v_5+(1325/36)*v_24+(73/2)*v_3+(946/45)*v_2+(34/5)*v+1
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例子
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n=10的一些解
..0..3....0..1....0..2....0..0....0..0....0..0....0..1....0..0....0..1....0..1
..0..3....0..3....0..2....0..1....0..1....1..2....0..1....0..2....0..1....0..1
..0..4....1..3....1..3....1..2....1..3....1..2....0..3....1..2....0..2....0..2
..1..4....1..3....1..3....1..2....2..3....1..3....1..4....1..2....1..2....1..2
..1..4....2..4....1..3....3..3....2..3....2..4....2..4....3..5....2..3....2..4
..1..5....2..4....2..4....3..5....2..4....3..4....2..4....3..5....3..3....3..4
..2..5....2..4....4..5....4..5....4..5....3..5....3..5....3..5....4..4....3..5
..2..5....5..6....4..5....4..5....4..5....4..6....3..5....4..6....5..6....3..5
..2..6....5..6....5..6....4..6....5..6....5..6....5..6....4..6....5..6....5..6
..6..6....5..6....6..6....6..6....6..6....5..6....6..6....4..6....5..6....6..6
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交叉参考
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关键词
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非n
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作者
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状态
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经核准的
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