#来自在线整数序列百科全书的问候!搜索:id:a279484 %S a279484 展示1-1 of 1的1 ;%I a279484 4;%S a279484 1、-1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;%T a279484 0 0,0,0,0,0,0,0,0,0,0,0,0,0,0 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 %N A279484乘积{k>=1}(1-x^(k^3))的展开式。 %C A279484将N划分为偶数个不同立方体的数目与N划分成奇数个不同立方体的数目之间的差。-_Ilya Gutkovskiy,2018年1月15日 %H A279484 Vaclav Kotesovec,n=0..100000时的n,a(n)表%A279484NN=10;系数列表[系列[产品[产品[(1-x ^(k^3)),{k,nn}],{x,0,nn^3}],x];%t A279484 nmax=1000;nn=地板[nmax^(1/3)]+1;poly=ConstantArray[0,nn^3+1];poly[[1]]=1;poly[[2]]=1;POY[[2]]]=1;POY[[2]]=1;POY[[3]]]=0;DoDo[POY[[j+1]]]-=POY[[j[j+1]]]]-[j[j-k^3[1[1[1[1]],{j,nn^3,k^3,-1}];,{k,2,nn}];取[poly,nmax+1] %Y A279484,参见A010815,A276516. %Y A279484参见A000009,A033461,A279329。 %Y A279484参见A279486。 %K A279484 sign %O A279484 0 %A A279484 %U Vaclav Kotesovec ,2016年12月13日 %Y A279484,参见OEIS最终用户许可协议:http://OEIS.org/License