import sys; input = sys.stdin.buffer.readline
sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")

def getlist():
	return list(map(int, input().split()))

#処理内容
def main():
	N = int(input())
	ans = [1]
	i = 3
	while True:
		if i <= N:
			ans.append(i)
			i += 2
		else:
			break

	print(*ans)


if __name__ == '__main__':
	main()