Colin Mallows's problems

[Ralf Stephan]

Nothing wow. Found an error, it should be:

%S A000001 1,2,2,4,2,6,2,8,4,6,2,17,2,6,6,16,2,18,2,17
%N A000001 Number of polynomials with coefficients in {0,1} that divide x^n-1.
(unchanged)

%S A000001 1,2,2,4,2,6,2,8,4,6,2,16,2,6,6,16,2,16,2,16,
%N A000001 Number of polynomials p with coefficients in {0,1} that divide x^n-1 and such that (x^n-1)/{p(x-1)} has all coefficients in {0,1}.
 
with differences at n = 12, 18, 20.


Regards,
ralf