import sys
input = sys.stdin.readline
MOD = 998244353
N = int(input())
dp = [[0 for _ in range(6)] for _ in range(N+1)]
dp[0][0] = 1
dir = [[1, 2, 3, 4, 5], [1, 2], [1, 2, 3], [2, 3, 4], [3, 4, 5], [4, 5]]
h = [-1, 0, 1, 1, 1, 0]
inv = [-1, 1]
for i in range(2, 6):
    inv.append(pow(i, MOD-2, MOD))
ans = 0
for i in range(N):
    for j in range(6):
        if dp[i][j]==0:
            continue
        for k in dir[j]:
            dp[i+1][k] += dp[i][j] * inv[len(dir[j])] % MOD
            dp[i+1][k] %= MOD
    for j in range(2, 5):
        ans += dp[i+1][j]
        ans %= MOD
print(ans)