[FIG(short list)[ [3] 四進法
- [[DNA]]
]FIG]


[1] [CITE@ja[位取り記数法 - Wikipedia]]
([TIME[2018-12-08 11:22:22 +09:00]])
<https://ja.wikipedia.org/wiki/%E4%BD%8D%E5%8F%96%E3%82%8A%E8%A8%98%E6%95%B0%E6%B3%95#%E5%9F%BA%E6%95%B0%E3%81%AE%E6%98%8E%E8%A8%98>

[2] [CITE@en[Quaternary numeral system - Wikipedia]]
([TIME[2018-12-07 15:51:15 +09:00]])
<https://en.wikipedia.org/wiki/Quaternary_numeral_system>