N=int(input())
dp=[[0 for _ in range(N)] for _ in range(N+1)]
dp[0][0]=1
p=998244353
for i in range(N):
    for j in range(N):
        if j!=N-1:
            dp[i+1][j+1]+=dp[i][j]
            dp[i+1][j+1]%=p
        if j!=0:
            dp[i+1][j-1]+=dp[i][j]
            dp[i+1][j-1]%=p
#print(dp)
ans=0
for i in range(1,N):
    for j in range(1,N):
        if (i-j)%2==1 or (N-1-i-j+1)%2==1:
            continue
        #i個目でjステージ上がっている
        a=(i-j)//2
        b=(i+j)//2
        c=(N-1-i-j+1)//2
        d=(N-1-i+j-1)//2
        if a>=0 and b>=0 and c>=0 and d>=0:
            #print(f'i={i} j={j} a={a} b={b} c={c} d={d}')
            ans+=dp[a+b][b-a]*dp[c+d][d-c]*(j-1)
            ans%=p
print(ans)