All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Numbers > Sequences
Name the sequence (Posted on 2018-09-17) Difficulty: 2 of 5
Let the increasing sequence of integers D: d1, d2, d3, ...dn-1, dn... represent the sequence of consecutive differences of another sequence T: t1, t2, t3, ...tn-1, tn.

Given t1=0 , and tk-tk-1=dk-1=k, provide definition and formula for the sequence T.

No Solution Yet Submitted by Ady TZIDON    
No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
re(2): Sequence Name Comment 5 of 5 |
(In reply to re: Sequence Name by Charlie)

yes - that was my solution, still based on the Triangular numbers. Had the problem been set up a little differently, starting with index zero or else:

tk+1-tk=dk=k
it would have been exactly the Triangle Numbers. 

  Posted by Steven Lord on 2018-09-17 23:57:49
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (4)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2019 by Animus Pactum Consulting. All rights reserved. Privacy Information