A(1,3)=10=5+3+2,编码成分之和[0,0,1],[0,1,0],[1,0,0]。
A(4,2)=211=81+54+36+24+16,编码成分之和[0,4],[1,3],[2,2],[3,1],[4,0]。
方阵A(n,k)开始:
1, 1, 1, 1, 1, 1, 1, ...
0, 2, 5, 10, 17, 28, 41, ...
0, 4, 19, 69, 188, 496, 1029, ...
0, 8, 65, 410, 1726, 7182, 20559, ...
0, 16, 211, 2261, 14343, 93345, 360612, ...
0, 32, 665, 11970, 112371, 1139166, 5827122, ...
0, 64, 2059, 61909, 848506, 13379332, 89131918, ...