求满足下列条件数列个数：长度为\(n\)\(\foralli\in[1,n]\quada_i\not=0\)\(a_1=1\)\(\forallk\in[1,n-1]\quad(a_{k+1}-a_k-1)(a_{k+1}+a_k)=0\)显然就是不能有\(0\)最为重要。义