注意迭代二项式变换数组中的对角线：
[_1,1,2,10,82,946,14246,267974,..]
[1,_2,5,20,139,1482,21389,390832,..]
[1,3,_10,42,258,2438,32854,577362,..]
[1,4,17,_82,499,4264,52361,869270,..]
[1,5,26,146,_946,7770,87350,1346062,..]
[1,6,37,240,1707,_14246,151501,2159484,..]
[1,7,50,370,2914,25582,_267974,3588122,..]
[1,8,65,542,4723,44388,473369,_6117202,..]
