Trinomial cube: https://www.google.com/search?q=binomial+cube&source=lnms&tbm=isch&sa=X&ei=Ih9CU8rKCcrkyAGggIHgDg&ved=0CAYQ_AUoAQ&biw=1197&bih=937#q=trinomial%2

Trinomial cube: https://www.google.com/search?q=binomial+cube&source=lnms&tbm=isch&sa=X&ei=Ih9CU8rKCcrkyAGggIHgDg&ved=0CAYQ_AUoAQ&biw=1197&bih=937#q=trinomial%20cube&revid=1326263989&tbm=isch&imgdii=_ https://www.google.com/search?q=binomial+cube&source=lnms&tb...