[seqfan] Re: A177045: ordering of expressions built from numbers 2 and exponentiations
franktaw at netscape.net
franktaw at netscape.net
Tue May 4 02:29:59 CEST 2010
If you look at all expressions with up to k 2's, and sort them, the
result will be correct up to and including the smallest number with
exactly k 2's.
This does not address the question of how to compare two such
expressions, since even with multiple-precision arithmetic, the values
will overflow for a fairly low value of k.
Franklin T. Adams-Watters
-----Original Message-----
From: Vladimir Reshetnikov <v.reshetnikov at gmail.com>
Hello seqfans,
Can anybody suggest an effective way to calculate elements of A177045?
Currently I need to manually prove that each element is in the correct
position - and I do not see any general way to do it so that I can
generate elements of this sequence with an algorithm. I believe it is
closely related to A002845, although I do not think that there is a
formula connecting them. And please, check that I provided correct
initial elements of the sequence.
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