[or reverse it for axanthic heterozygous snow]

Albino heterozygous for axanthic = aab⁺ X Albino heterozygous for axanthic = aab⁺

The following are averages over a long period of time (out of a possible 16) you get:

4 albino = aa⁺⁺
8 Albino heterozygous axanthic = aab+
4 Snow = aabb