perplexus.info :: Numbers : Consecutive Triangles

Consecutive Triangles (Posted on 2009-11-29)

A, B, C and D are triangular numbers.

A, B and C are always consecutive while D is their sum.

Determine (and explain as best as possible¹) how such sets of values are distributed across the number system.

^1. This can be explained in terms of a single variable expression.

See The Solution Submitted by brianjn

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Subject	Author	Date
re: computer-aided solution	brianjn	2009-12-02 04:17:44
re(3): an observation	brianjn	2009-11-30 19:20:52
re(2): an observation	Charlie	2009-11-30 11:35:10
re: an observation	brianjn	2009-11-30 08:13:20
an observation	Dej Mar	2009-11-30 04:40:05
computer-aided solution	Charlie	2009-11-29 19:04:46
re: a 6.4 second question	brianjn	2009-11-29 18:12:09
a 6.4 second question	Ady TZIDON	2009-11-29 16:20:14

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