x+x^2第（2^i）次迭代的系数表开始于：
1,1;
(1),2,2,1;
1,(4),12,30,64,118,188,258,302,298,244,162,84,32,8,1;
1,8,(56),364,2240,13188,74760,409836,2179556,11271436,56788112,...;
1,16,240,(3480),49280,685160,9383248,126855288,1695695976,...;
1,32,992,30256,(912640),27297360,810903456,23950328688,...;
1,64,4032,252000,15665664,(969917088),59855127360,3683654668512,...;
1,128,16256,2056384,259445760,32668147008,(4106848523904),...;
1,256,65280,16613760,4222658560,1072200161920,272033712041216,(68973668731925376),...;
...
其中括号中的术语构成此序列的初始术语。
