Catalan + Haüy but its Perfect Numberblocks Band 3 #band #catalan #hauyrhombic #numberblock #functionband #numberblocksband #pb3 #fyppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppyppppppppppppppppppppppppp pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppyppppppppppppppppppppppppp