推 fish0835:用指數生成函數去解長度r的4位元字串中,具偶數0的字串數 04/04 21:54
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.114.216.145
Find the number of r-digit quanternary sequences that comtain an even number
of 0's. The exponential enumerator for the permutation of the digit 0 is
可以幫我翻譯一下嗎?
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