#来自在线整数序列百科全书的问候!搜索:http://oeis.org/; 搜索:id:a286786 展示1-1的1-1;%I a286786;%S a286786 1 86786 1,9,9,9,91106101106314193213995336028916716852712713756363612930746149055,;%T a286786 7451353516111911948522324248311511511547092242425546422221216262867929457,;;%U a286786 5249707070703065086595959457,;%U A28678786 52497070707030650865959691171718780941075310781926666666666666663105248124196472394554341769963736849031626750711451,40289411871795861783689799 %N A286786 A286786第1列。 %H A286786 Ghorge Coserea,n=1..210的n,a(n)表%二○A286786(平价);%o A286786 A286786 A286781\U ser(N,t='t)={;%o A286786 my(x='x+o('x^N),y0=1+o('x^N),y0=1+o('x^N),y1=0,N=1);;;%o A286786 while(N+++,;%o A286786 y1=(1+x*y0+2*x^2*y0 y0')*(1-x*y0*(1-t))/(1-x*y0*(1-t))/(1-x*y0)^2;(1-x*y0)^2;;;(1-x*y0)%o A286786 if(y1==y0,break());y0=y1;); %o A286786 y0;;%o A286786}; %o A286786 Kol(K,N=20)={N;%o A286786 my(s=A286781用户(N+K,'t+o('t^(K+1)))));;;;%o A286786矢量矢量(N,N,N,polcoeff(polcoeff(s,K+N N-1,K),K));;;;%o A286786 Kol(1);%Y A286786 Kol(1);%Y A286786比照A286781。;%K A286786 786非N N N;%o A286786 786 Non N N;%o A286786 1,2%o A286786 1,2%o A286786 1,2;%A A286786 Gheorghe Coserea