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例子
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三角形开始:
0: [ 1]
1: [ 1, 2]
2: [ 4, 6, 4]
3: [ 12, 30, 24, 8]
4: [ 52, 144, 156, 80, 16]
5: [ 240, 760, 1020, 680, 240, 32]
6: [1188, 4440, 6720, 5640, 2640, 672, 64]
7: [6804, 26712, 47040, 45640, 26880, 9408, 1792, 128]
...
对于n=3,x^(x^2)的三阶导数是p(3,x,t)=8*t^3*x^3*x^(x^2)+12*t^2*x^3*x^替换为t。在x=1:p(3,1,t)=12+30*t+24*t^2+8*t^3时计算,系数为[12,30,24,8]。
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