import sys
input = sys.stdin.readline
def read_values(): return tuple(map(int, input().split()))

def main():  
    q=int(input())
    mod=998244353
    r=[0]*500000
    e=[0]*500000
    r[0]=e[0]=r[1]=1
    e[1]=3
    for i in range(500000-2):
        r[i+2]=(r[i+1]+r[i])%mod
        e[i+2]=(e[i+1]+e[i])%mod
    for _ in range(q):
        n=int(input())
        n-=1
        print((r[n]*r[n]*5-e[n]*e[n])%mod)    
    
if __name__ == "__main__":
    main()