The Wacky World Of Numbers (1968)

Adapted by the book by Sheldon Wasserman." Bizarrely minimal short that is essentially a series of animated, silly puns and jokes based on the shapes of numerals, intercut with psychedelic, kaleidoscopic transitions and horn-based go-go music. The look was clearly inspired by ROWAN & MARTIN'S LAUGH-IN (but maybe without the laughs).