include <bits/stdc++.h>

using namespace std; int main(){

int n,d=2;
cin>>n;
cout<<d<<" ";
for(int i=2;i<=n;i++){
	if(i%2!=0){
		d+=3;
		cout<<d<<" ";
	}
	else{
		d-=1;
		cout<<d<<" ";
	} 
}
return 0;

}