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例子
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阵列启动:
[0] 1, 0, 0, 0, 0, 0, 0, 0, 0, ...
[1] 0, 1, 1, 1, 1, 1, 1, 1, 1, ...
[2] 0, 1, 5, 13, 29, 61, 125, 253, 509, ...
[3] 0, 1, 13, 73, 301, 1081, 3613, 11593, 36301, ...
[4] 0, 1, 29, 301, 2069, 11581, 57749, 268381, 1191989, ...
[5] 0, 1, 61, 1081, 11581, 95401, 673261, 4306681, 25794781, ...
[6] 0, 1, 125, 3613, 57749, 673261, 6487445, 55213453, 431525429, ...
[7] 0, 1, 253, 11593, 268381, 4306681, 55213453, 610093513, 6077248381, ...
。
视为三角形T(n,k)=A(n-k,k):
[0] 1;
[1] 0, 0;
[2] 0, 1, 0;
[3] 0, 1, 1, 0;
[4] 0, 1, 5, 1, 0;
[5] 0, 1, 13, 13, 1, 0;
[6] 0, 1, 29, 73, 29, 1, 0;
[7] 0, 1, 61, 301, 301, 61, 1, 0;
。
A(n,k)作为权力总和:
A(2,k)=-3+2*2^k;
A(3,k)=7-12*2^k+6*3^k;
A(4,k)=-15+50*2^k-60*3^k+24*4^k;
A(5,k)=31-180*2^k+390*3^k-360*4^k+120*5^k;
A(6,k)=-63+602*2^k-2100*3^k+3360*4^k-2520*5^k+720*6^k;
A(7,k)=127-1932*2^k+10206*3^k-25200*4^k+31920*5^k-20160*6^k+5040*7^k;
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