void main(){
  import std.stdio, std.string, std.conv, std.algorithm;

  int k; rd(k);

  int[] a;
  auto v=(1<<k);
  auto u=v/2;
  a~=u;
  while(u>1){
    auto w=u/2;
    while(w<v){
      a~=w; w+=u;
    }
    u/=2;
  }
  foreach(i, e; a){
    if(i) write(" ");
    if(e==1) write(2);
    else if(e==2) write(1);
    else write(e);
  }writeln();

}

void rd(T...)(ref T x){
  import std.stdio, std.string, std.conv;
  auto l=readln.split;
  foreach(i, ref e; x){
    e=l[i].to!(typeof(e));
  }
}