以下是一个使用Python编写的程序，用于制作一个八进制金字塔并计算最后一行的总和：

def create_octal_pyramid(rows):
    pyramid = []
    row_length = rows * 2 - 1

    for i in range(1, rows + 1):
        row = []
        for j in range(i):
            num = oct(j + 1)[2:]
            row.append(num)
        for j in range(i - 2, -1, -1):
            num = oct(j + 1)[2:]
            row.append(num)
        row = ['0' * (len(str(oct(row_length)[2:])) - len(num))] + row
        pyramid.append(row)
    
    return pyramid

def calculate_last_row_sum(pyramid):
    last_row = pyramid[-1]
    last_row_sum = sum([int(num, 8) for num in last_row])
    return last_row_sum

# 测试示例
rows = 5
pyramid = create_octal_pyramid(rows)
print("八进制金字塔：")
for row in pyramid:
    print(' '.join(row))
last_row_sum = calculate_last_row_sum(pyramid)
print("最后一行的总和：", last_row_sum)

运行以上代码，将会输出一个八进制金字塔以及最后一行的总和。你可以自定义rows的值来调整金字塔的行数。