Visual proofs and living diagrams — primes igniting along spiral diagonals, any path rebuilt from rotating epicycles — the structure that hides in plain arithmetic.
Every number has a story — pull the drawers of a card catalog to read its number-theory nature, alternate representations, calendar day and the famous sequences it belongs to.
Any closed path reconstructed from a sum of rotating epicycles.
Ulam's spiral — primes igniting along hidden diagonals.