a(n)=1/120*n^10-5/18*n^9+253/72*n^8-689/45*n^7-34217/360*n^6+28391/18*n^5-6828569/810*n^4+29655659/1620*n*3+14328773/1296*n^2-779503661/6480*n+9261910451/6480+(1/8*n_5-143/48*n*n^4+79/3*n^3-4711/48*n^2+5171/48*n+2549/32)*(-1)^n+1/2*(29*n-35)*cos(Pi*n/2)+(2*n+15)*sin(Pi*n/2)+1/81*(96*n^3-1328*n^2+4744*n-2248)*cos(4*Pi*n/3)-1/243*(120*n^2-1496*n+5224)*sqrt(3)*sin平方(50+22*sqrt(5))*sin(8*Pi*n/5),n>=10。
a(n)=n^10/120-5*n^9/18+253*n^8/72-689*n^7/45-34307*n^6/360+57001*n^5/36-55000657*n^4/6480+60118543*n^3/3240+34387307*n^2/3240-155720509*n/1296+142960+楼层【n/2】+(32*n^3/9-1328*n^2/27+4744*n/27-2248/27)*楼层【n/3】+(16*n^3/9-724*n^2/27+1040*n/9-3736/27)*层[(n+1)/3]+(33*n-5)*层[n/4]+32/5)*地板[(n+3)/5],n>=10。
通用频率:(2*x^7*(-124-3784*x-44667*x ^2-310723*x ^3-1509124*x ^4-5621180*x ^5-16954312*x ^6-42976662*x ^7-93896850*x ^8-180088868*x ^9-307206501*x ^10-470650261*x ^11-652017897*x ^12-820670989*x ^13-941074901*x ^14-984212615*x ^15-938015444*x ^16-812413066*x ^17-635893 628*x^18-445615046*x^19-275100707*x^20-145295581*x^21-61597137*x^22-17181649*x^23+704005*x^24+4589289*x^25+3324134*x^26+1424132*x^27+316332*x^28-58210*x^29-91844*x^30-47684*x^31-15863*x^32-3119*x^33+490*x^34+982*x^35+632*x|36+260*x^37+126*x^38+54*x*x^39)/(-1+x)^11*(1+x)^2)^2*(1+x+x^2)。
重现性:a(n)=a(n-37)+a(n-36)-3a(n-35)-7a(n-34)-3a n-17)+88a(n-16)+15a(n-15)-57a(n-14)-81a(n-13)-49a(n-12)+8a(n-11)+44a(n-10)+41a(n-9)+13a(n-8)-13a(n-7)-21a(n-6)-11a(n-5)+3a(n-4)+7a(n-3)+3a。
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