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        1. O(sh)fn=nn+1gn=n+1nnN*
          1(dng)n=1234r(sh)^fncgnĴ
          2(j)1ĽY(ji)œyһ(g)һԽY(ji)ՓC
          𰸡}֪R(sh)c(din)ǚw{c(sh)W(xu)w{҂гnn+1cn+1nnN*ǰ(xing)Ȼքe^СȻɚw{һ(g)һԵĽY(ji)ՓȻÔ(sh)W(xu)w{M(jn)C
          ⣺1(dng)n=1r(sh)nn+1=1n+1n=2˕r(sh)nn+1n+1n
          (dng)n=2r(sh)nn+1=8n+1n=9˕r(sh)nn+1n+1n
          (dng)n=3r(sh)nn+1=81n+1n=64˕r(sh)nn+1n+1n
          (dng)n=4r(sh)nn+1=1024n+1n=625˕r(sh)nn+1n+1n
          2(j)Y(ji)Փ҂룺(dng)n3r(sh)nn+1n+1nnN*
          ٮ(dng)n=3r(sh)nn+1=34=81n+1n=43=64
          nn+1n+1n
          ڼO(sh)(dng)n=kr(sh)kk+1k+1k1
          t(dng)n=k+1r(sh)==1
          k+1k+2k+2k+1(dng)n=k+1r(sh)Ҳ
          ஔ(dng)n3r(sh)nn+1n+1nnN*
          c(din)u(sh)W(xu)w{ÁCһ(g)cȻ(sh)NP(gun)|(zh)䲽E飺O(sh)PnP(gun)Ȼ(sh)n}1 Pnn=1r(sh)2w{ PkkȻ(sh)ļO(sh)¿ƳPk+1tPnһȻ(sh)n
          (x)ϵд
          P(gun)(x)}

          ĿД(sh)W(xu) Դ

          һ(g)n(j)_(ti)Aÿһ(j)ɼ(j)O(sh)Ϸ(sh)fntв_ǣ
          Afn=n
          Bfn=fn-1+fn-2
          Cfn=fn-1•fn-2
          Dfn=
          nn=12
          f(n-1)+f(n-2)n3

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          O(sh)fn=nn+1gn=n+1nnN*
          1(dng)n=1234r(sh)^fncgnĴ
          2(j)1ĽY(ji)œyһ(g)һԽY(ji)ՓC

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) ԴԔ }

          O(sh)fn=nn+1gn=n+1nnN*
          1(dng)n=1234r(sh)^fncgnĴ
          2(j)1ĽY(ji)œyһ(g)һԽY(ji)ՓC

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) ԴԔ }

          O(sh)fn=nn+1gn=n+1nnN*
          1(dng)n=1234r(sh)^fncgnĴС
          2(j)1ĽY(ji)œyһ(g)һԽY(ji)ՓC

          鿴𰸺ͽ>>

          ͬ(x)Դ