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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    
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re: Sequence Name | Comment 4 of 5 |
(In reply to Sequence Name by Steven Lord)

Is not each member one less than the corresponding triangular number?
  Posted by Charlie on 2018-09-17 22:26:19

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