def shapeArea(n):
    a = 1
    for i in range(n):
        a = a + 4*(i)
    return a
508e81f0bd2b216ae17993e4f5895ef7a598fc66
<mask token>

def shapeArea(n):
    a = 1
    for i in range(n):
        a = a + 4 * i
    return a

def shapeArea(n):
    a = 1
    for i in range(n):
        a = a + 4*(i)
    return a