36,63

來源: 15少於 2023-02-17 04:37:39 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

單數項=7n+1

偶數項=n2-1

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.