摘要:
For nonnegative integer l,Ll is the/th Lucas Number and (ni) =n!/i! (n-i) ! is the binomial coeffient.For any nonnegative integer l,k and positive integer n,l(k,3,n) denotes the convolution of sequence {(ni)}ni=0 and {L3k+i}ni=0,namely,l(k,3,n) =(n0) L3k + (n1) L3k+1 + … + (nn) L3k+n· According to the definition of the Fibonacci sequence and by using the knowledge of elementary number theory,it is proved that l (k,3,n) is equal to 2nL3k+2n +3(-1)k+n Lk-n or2nL3k+2n+3Ln-k whenk≥nornot.%对于非负整数l,Ll表示第l个Lucas数;(ni) =n!/i!(n-i)为二项式系数;对于非负整数l和k以及正整数n,设l(k,3,n)是数列{(ni)}nj=0和{L3k+i}ni=0的卷积,即l(k,3,n)=(n0)L3k+(n1)L3k+1+…+(nn)L3k+nnΣi=0(ni)L3k+i.文章证明了k≥n时,l(k,3,n) =2nL3k+2n+3(-1)k+nLk-n;当k<n时,l(k,3,n) =2nL3k+2n +3Ln-k成立.