[seqfan] Re: three triangular numbers in a row
franktaw at netscape.net
franktaw at netscape.net
Fri Jun 24 06:34:52 CEST 2011
Almost certainly not, but I don't see any real hope of proving it.
Franklin T. Adams-Watters
-----Original Message-----
From: Brendan McKay <bdm at cs.anu.edu.au>
To: seqfan at list.seqfan.eu
Sent: Thu, Jun 23, 2011 10:58 pm
Subject: [seqfan] three triangular numbers in a row
A question related to A075528 and A061278 was asked at
http://en.wikipedia.org/wiki/Wikipedia:Reference_desk/Mathematics#Striped_triangle_question
It is equivalent to:
Is there any n such that n, 2n, and 3n are all triangular numbers?
Brendan.
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