[seqfan] Has anyone tried TableCurve 2D?

Neil Sloane njasloane at gmail.com
Tue Apr 11 06:21:20 CEST 2017

See http://www.sigmaplot.co.uk/products/tablecurve2d/tablecurve2d.php

Bob Wilson mentioned this in a pink box comment, so maybe he has tried it.

My question is, will it help with my constant headaches?
These headaches occur when I have a lot of terms of a sequence,
and I want a formula that will say something like
a(n) is roughly ... without my having to do a lot
of curve fitting, least squares, etc.

And of course I'm especially interested in extrapolating the sequence
out to infinity.

For instance, I'm very interested in A280774, and the b-file
gives 25K terms. Is there any chance TableCurve 2D will help?
There is a definite supra-linear "curve", but the first differences
look like a sandstorm.

It sells for less than $1000 but it is not cheap;  there is however a
free trial offer. I'm skeptical, but has anyone tried it?


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