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例子
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前五行:
1;
1, 1;
1, 2, 3;
1, 3, 7, 7;
1, 4, 12, 20, 17;
前五个多项式u(n,x):
1
1+x个
1+2x+3x^2
1+3x+7x^2+7x*3
1+4x+12x^2+20x^3+17x^4
(1,0,0,0-0,0-…)DELTA(0,1,2,-1,0-,0-
1;
1, 0;
1, 1, 0;
1, 2, 3, 0;
1, 3, 7, 7, 0;
1, 4, 12, 20, 17, 0;
1, 5, 18, 40, 57, 41, 0; (结束)
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