MOD = 10**9+7
N = int(input())
if N<=3:
    print(0)
else:
    dp = [[0 for _ in range(16)] for _ in range(2)]
    for j in range(1<<4):
        dp[1][j] = 1
    dp[1][10] = 0
    for i in range(4,N):
        dp[i%2][0] = (dp[(i-1)%2][0]+dp[(i-1)%2][1])%MOD
        dp[i%2][1] = (dp[(i-1)%2][2]+dp[(i-1)%2][3])%MOD
        dp[i%2][2] = (dp[(i-1)%2][4]+dp[(i-1)%2][5])%MOD
        dp[i%2][3] = (dp[(i-1)%2][6]+dp[(i-1)%2][7])%MOD
        dp[i%2][4] = (dp[(i-1)%2][8]+dp[(i-1)%2][9])%MOD
        dp[i%2][5] = dp[(i-1)%2][11]
        dp[i%2][6] = (dp[(i-1)%2][12]+dp[(i-1)%2][13])%MOD
        dp[i%2][7] = (dp[(i-1)%2][14]+dp[(i-1)%2][15])%MOD
        dp[i%2][8] = (dp[(i-1)%2][0]+dp[(i-1)%2][1])%MOD
        dp[i%2][9] = (dp[(i-1)%2][2]+dp[(i-1)%2][3])%MOD
        dp[i%2][10] = 0
        dp[i%2][11] = (dp[(i-1)%2][6]+dp[(i-1)%2][7])%MOD
        dp[i%2][12] = (dp[(i-1)%2][8]+dp[(i-1)%2][9])%MOD
        dp[i%2][13] = dp[(i-1)%2][11]
        dp[i%2][14] = (dp[(i-1)%2][12]+dp[(i-1)%2][13])%MOD
        dp[i%2][15] = (dp[(i-1)%2][14]+dp[(i-1)%2][15])%MOD
    tot = 0
    for j in range(16):
        tot = (tot+dp[(N-1)%2][j])%MOD
    tot = ((1<<N)-tot)%MOD
    print(tot)