#include<bits/stdc++.h>
using std::cin;
using std::cout;
using std::endl;
using std::vector;
const int mod=1e9+7;
int main(){
    int N; cin>>N;
    int M=sqrt(N);
    vector<int> dp(N);
    vector<vector<int>> sum(M+1,vector<int>(M+1));
    dp[0]=1;
    vector<int> A(N);
    for(int i=0;i<N;i++){
        cin>>A[i];
        if(i>0&&A[i-1]>1){
            dp[i]+=dp[i-1];
            dp[i]%=mod;
        }
        for(int j=1;j<=M;j++){
            dp[i]+=sum[j][i%j];
            dp[i]%=mod;
        }
        if(A[i]<=M){
            sum[A[i]][i%A[i]]+=dp[i];
            sum[A[i]][i%A[i]]%=mod;
        }
        else{
            for(int j=i+A[i];j<N;j+=A[i]){
                dp[j]+=dp[i];
                dp[j]%=mod;
            }
        }
    }
    cout<<dp[N-1]<<endl;
}