2n5

Could you clarify what “2n5” refers to? It could denote different things in different contexts, such as a mathematical expression (often written as 2n + 5), a model or part number, a gene or protein designation, a cultural or fictional reference, or something else. If you specify the intended domain or provide a bit more context, I can generate a concise, neutral wiki-style article focused on that particular meaning in under 300 words.