docstr: Returns the number of independent generators of C_n
docstr_tok: ["Returns","the","number","of","independent","generators","of","C_n"]
code: def basis(self):
      """
      Returns the number of independent generators of C_n
      """
  
      n = self.n
      return n * (2 * n + 1)
  
file_path: sympy/sympy/liealgebras/type_c.py
imports: from .cartan_type import Standard_Cartan
  from sympy.core.backend import eye
label_desc: Use image node_id 8 for calling the TypeC obj's underlying member method code with example usage: obj.basis() and returns: unknown