+++ to secure your transactions use the Bitcoin Mixer Service +++

 

bn:01420185n
Noun Concept
Categories: Proof without words, Factorial and binomial topics, Triangles, Simplex numbers, Figurate numbers
EN
triangular number  Triangle numbers  handshake problem  Numeri trianguli  Pairing Theory
EN
A triangular number or triangle number counts objects arranged in an equilateral triangle. Wikipedia
Definitions
Relations
Sources