9 ladya

n = 98  # Сторона поля

i = 0
counter = 0
while i < n:
    for j in range(i + 1):
        a = i + 1
        while a < n:
            for b in range(a + 1):
                if i != a and j != b:
                    counter += 1
            a += 1
    i += 1
print(f'counter={counter}')