import sys
input=lambda:sys.stdin.readline().rstrip()
prob=[1/12,1/6,1/4,1/12,1/4,1/6]
T=int(input())
N=[int(input()) for i in range(T)]
M=max(N)
ans=[0 for i in range(M+1)]
for i in range(1,M+1):
	ans[i]=1
	for j in range(min(6,i)):
		ans[i]+=prob[j]*ans[i-j-1]
for i in N:
	print(ans[i])