[seqfan] Re: Palindome reciprocal sums

[Hans Havermann]

> A convenient base-b extrapolation shortcut is to take the calculated value at 2n+1 binary digits, multiply it by b, subtract the value at 2n-1, and divide the result by (b-1).

Oops. The word "binary" should not of course be in there. I started with a binary recipe and worked it into a base-b one but neglected to delete the word. Also, to be fair, I'm only guessing at the formulation based on my experience with the base-2 and base-10 examples.