Find First N Perfect Numbers

n = input("Enter a Integer in range [1 ... 20], for count N: ")
n = int(n)

mersenne_primes_sequence = [2, 3, 5, 7, 13, 17, 19, 31, 61, 89, 107,
127, 521, 607, 1279, 2203, 2281, 3217, 4253, 4423, 9689, 9941, 11213,
19937, 21701, 23209, 44497, 86243, 110503, 132049, 216091, 756839,
859433, 1257787, 1398269, 2976221, 3021377, 6972593, 13466917,
20996011, 24036583, 25964951, 30402457, 32582657]

print('The First {0} perfect numbers are:' .format(n))
counter_perfect_numbers = 0
for mersenne_number in mersenne_primes_sequence:
    print(2 ** (mersenne_number - 1) * ((2 ** mersenne_number) - 1))
    counter_perfect_numbers += 1

    if counter_perfect_numbers == n:
        break