| 数据
|
0, 1, 2, 20, 36, 16, 456, 944, 672, 160, 14304, 33760, 28800, 10880, 1536, 575040, 1466752, 1413120, 666880, 157440, 14848, 27659520, 74774784, 79278080, 43330560, 13153280, 2128896, 143360, 1548126720
|
| 例子
|
{0}; {1,2};{20,36,16}; {456,944,672,160}; ...
pPL1(2,n)=4*(5+9*n+4*n^2)=4x(1+n)*(5+4*n);pL2(2,n)=8*(1+3*n+2*n^2)=8x(1+n)*(1+2*n);PL(2;n)=A054460号(n) =(1+n)*((5+4*n)*PL(n+1)+(1+2*n)*PL(n))/16。
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