[seqfan] Re: a question about triangular numbers

franktaw at netscape.net franktaw at netscape.net
Tue Dec 8 23:08:19 CET 2009

Well, trivially a(n) >= n/3.

Franklin T. Adams-Watters

-----Original Message-----
From: Tanya Khovanova <mathoflove-seqfan at yahoo.com>


Not any number is a sum of two triangular numbers. When n - (the 
triangular not exceeding n) can't be represented as a sum of two 
triangles, we
get a drop out.

Is there any lower bound for this sequence?


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