[Axiom-math] guessing sequences

[William Sit]

Dear Martin:

I try your functions with the sequences:

A: 1, 9, 113, 1711, 28729, 514615

B: 1, 9,  49,  271,  1613,  10013

C: 1, 9, 113, 1719, 28981, 521103

D: 1, 9,  49,  279,  1793,  12441


but each of the functions returned an empty list. (The sequences seem not to be
in Sloane library; they are not arbitrary and count the number of some binary
trees; and the next term will take a few days to compute by brute force). Any
help will be much appreciated. 

William