例如:A(x)=1+x+3*x^2/2!+43*x^3/3!+1369*x^4/4!+69561*x^5/5!+4991371*x^6/6!+471516403*x ^ 7/7!+56029153713*x ^8/8!+8112993527089*x ^ 9/9!+。。。
这样[x^n]A(x)^(4*n)=(n+3)*[x^(n-1)]A(x)^。
相关系列。
A(x)^4=1+4*x+24*x^2/2!+304*x^3/3!+8320*x^4/4!+390144*x^5/5!+26653696*x ^6/6!+2434011136*x^7/7!+282056564736*x ^8/8!+。。。
定义说明。
A(x)^(4*n)中x^k的系数表开始于:
n=1:[(1),(4),12,152/3,1040/3,16256/5,1665856/45,152125696/315,…];
n=2:[1,(8),(40),592/3,3728/3,157376/15,4992064/45,86636800/63,…];
n=3:[1,12,(84),(504),3264,129408/5,1273536/5,104486784/35,…];
n=4:[1,16,144,(3104/3),(21728/3),283264/5,23764096/45,1844359168/315,…];
n=5:[1,20,220,5560/3,(42800/3),(342400/3),9296960/9,687731200/63,…];
n=6:[1,24,312,3024,25680,(1073856/5),(9664704/5),690265344/35,…];
n=7:[1,28,420,13832/3,129248/3,1905792/5,(156447424/45),(312894848/9),…]。。。
其中括号中的系数与
4 = 4*(1); 40=5*(8);504 = 6*(84); 21728/3 = 7*(3104/3); 342400/3 = 8*(42800/3); 9664704/5 = 9*(1073856/5); ...
图示:[x^n]A(x)^(4*n)=(n+3)*[x^(n-1)]A(x)^。
逻辑属性。
例如f.的对数是x中的整数幂级数,满足
对数(A(x))=x*(1-3*x*A'(x)/A(x)/(1-4*x*A’(x)/Ax));
明确地,
对数(A(x))=x+x^2+6*x^3+50*x^4+520*x^5+6312*x^6+8608*x^7+1288704*x^8+20862720*x^9+361454720*x^10++A300989型(n) *x^n+。。。
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