#!/usr/bin/python
from collections import Counter
mul = lambda x, y: x*y
def nCr(n, r):
    if r == 0 or n == r:
        return 1
    k = r if r <= n-r else n-r
    return reduce(mul, xrange(n, n-k, -1)) / reduce(mul, xrange(1, k+1))

mod = int(1e9) + 7
n = int(raw_input())
As = map(int, raw_input().split())
res = nCr(n, 3)
for v in filter(lambda e: e>1, Counter(As).values()):
    res -= nCr(v, 2) * (n-v)
    if v >= 3:
        res -= nCr(v, 3)
print res % mod