import sys
input = sys.stdin.readline

mod=998244353

FACT=[1]
for i in range(1,3*10**6+1):
    FACT.append(FACT[-1]*i%mod)

FACT_INV=[pow(FACT[-1],mod-2,mod)]
for i in range(3*10**6,0,-1):
    FACT_INV.append(FACT_INV[-1]*i%mod)

FACT_INV.reverse()

def Combi(a,b):
    if 0<=b<=a:
        return FACT[a]*FACT_INV[b]%mod*FACT_INV[a-b]%mod
    else:
        return 0

C=[]

for i in range(10**6+5):
    C.append(Combi(2*i,i)*pow(i+1,mod-2,mod)%mod)

SC=[0]
for c in C:
    SC.append((SC[-1]+c)%mod)

A=[0]*(10**6+5)
for i in range(2,10**6+5):
    A[i]=(3*A[i-1] + SC[i-1])%mod

T=int(input())

for tests in range(T):
    N=int(input())

    if N%2==1:
        print(0)
    else:
        print(A[N//2]%mod)