Mathematics Atlas

How Proof Is Made
Sign In
Text size
100%
Theme
Mathematical Object

Square Triangular Number

Number Theory

A square triangular number is a number that is both a triangular number and a perfect square, meaning the sum of all integers from 1 to some n is itself a number with an integer square root. The first few square triangular numbers are 0, 1, 36, 1225 and 41616. There are infinitely many of them, though they become increasingly rare as the values grow larger. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/

Facts
Classification
Object Kind
Number 1
Connections

Is Kind Of Object

Entity-backed identity for the object-kind enum value this mathematical object already carries, resolved to a mathematics concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The object-kind fact itself stays on the object unchanged.

Sources
1. Square Triangular Number (Wikipedia)
Comments (0)
No comments yet. Be the first to share a thought.
Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.