On the colored Links--Gould polynomial

We give a cabling formula for the Links--Gould polynomial of knots colored with a 4n-dimensional irreducible representation of UHqsl (2|1) and identify them with the Vₙ-polynomial of knots for n=2. Using the cabling formula, we obtain genus bounds and a specialization to the Alexander polynomial for the colored Links--Gould polynomial that is independent of n, which implies corresponding properties of the Vₙ-polynomial for n=2 conjectured in previous work of two of the authors, and extends the work done for n=1. Combined with work of one of the authors arXiv: 2409. 03557, our genus bound for LG^ (2) =V₂ is sharp for all knots with up to 16 crossings.