№21 — #215

def f(a, m):
    if a >= 132: return m % 2 == 0
    if m == 0: return 0
    h = [f(a + 3, m - 1), f(a + 6, m - 1), f(a * 3, m - 1)]
    return any(h) if m % 2 != 0 else all(h)
# print('19)', [s for s in range(1, 132) if not f(s, 1) and f(s, 2)])
# print('20)', [s for s in range(1, 132) if not f(s, 1) and f(s, 3)])
print('21)', [s for s in range(1, 132) if f(s, 4) and not f(s, 2)])