#include<cstdio>
#include<vector>


using namespace std;
using vi=vector<int>;


void solve(vi&a, int*&p, int offset, int k)
{
	if(k==0) return;
	int c=(1<<(k-1))+offset;

	*p++=c;
	solve(a, p, offset, k-1);
	solve(a, p, c, k-1);
}


int main(void)
{
	int k;

	while(scanf("%d", &k)==1)
	{
		vi a((1<<k)-1);
		int *p=&a[0];

		solve(a, p, 0, k);
		swap(a[0], a[1]);
		for(int i=0;i+1<a.size();i++)
		{
			printf("%d ", a[i]);
		}
		printf("%d\n", a.back());
	}

	return 0;
}