Ulam Numbers

Initializing live version
Download to Desktop

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.

The Ulam numbers (or u-numbers) are the sequence defined by , . For , is the least integer uniquely expressible as the sum of two distinct earlier terms. For example, if and , , , and ; because .

[more]

This Demonstration shows the Ulam sequence for , , and , highlighting the unique pair of terms that sum to .

[less]

Contributed by: Emmanuel Garces Medina (December 2011)
Open content licensed under CC BY-NC-SA


Snapshots


Details



Feedback (field required)
Email (field required) Name
Occupation Organization
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.
Send