for q in range(int(input())):
    x=int(input())
    if(x==1):
        print(4)
        continue
    r=[0,1,1]
    e=[0,1,3]
    for i in range(x-2):
        r[0]=r[1]
        r[1]=r[2]
        r[2]=r[0]+r[1]
        e[0]=e[1]
        e[1]=e[2]
        e[2]=e[0]+e[1]
    print((5*(r[-1]**2)-(e[-1]**2))%998244353)