This is a handy diagram showing all the meanings of the symbols you see in Persian rugs.
while the 16 with half-integer coordinates form the vertices of a hypercube (the 4d analogue of a cube):
symbols for wealth - Google Search
#NO15-404 A new geometric design every dayBuy my posters on LinxSupply
#JL15-262A new geometric design every day.
#OC15-353 A new geometric design every day
28th Regiment of Foot, Quatre Bras..Waterloo 1815
Mindblowing 'Geometric Beasts' Illustrations by Kerby Rosanes
#413 Sunken city – A new minimal geometric composition each day