mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    N = int(input())
    A = list(map(int, input().split()))

    S = 0
    for i in range(N-1, -1, -1):
        S += A[i]
        if S % (i+1) != 0 or A[i] > i+1:
            print("No")
            exit()
    print("Yes")


if __name__ == '__main__':
    main()