def isPentagonal(q): x = (1 + math.sqrt(1 + 24 * q)) / 6.0 return int(x) == x def isTriagonal(q): x = (1 + math.sqrt(1 + 8 * q)) / 2.0 return int(x) == x
def isPentagonal(q): x = (1 + math.sqrt(1 + 24 * q)) / 6.0 return int(x) == x def isTriagonal(q): x = (1 + math.sqrt(1 + 8 * q)) / 2.0 return int(x) == x