cp's OEIS Frontend

A075791 If n can be written in the form r^i-s^j (see A074981), where r,s,i,j are integers with r>0, s>0, i>1, j>1 choose the representation with smallest r^i (in case of ties, minimize i and j); or if n is not of this form set r=s=i=j=0; sequence gives values of j.

%I A075791 #5 Mar 30 2012 17:38:03
%S A075791 3,2,2,2,2,0,2,2,2,7,2,2,2,0,2,2,3,2,3,2,2,3,2,2,2,2,2,2,2,3,2,2,2,0,
%T A075791 2,2,3,3,2,2,3,0,2,2,2,5,2,2,5,0,2,2,2,3,2,3,2,0,2,2,2,0,2,2,2,0,2,5,
%U A075791 2,0,3,2,3,2,2,2,2,0,2,2,2,0,2,2,2,0,2,2,5,0,2,3,5,3,2,2,7,3,2,2,3,0,2,2,2
%N A075791 If n can be written in the form r^i-s^j (see A074981), where r,s,i,j are integers with r>0, s>0, i>1, j>1 choose the representation with smallest r^i (in case of ties, minimize i and j); or if n is not of this form set r=s=i=j=0; sequence gives values of j.
%C A075791 The zeros are only conjectures (cf. A074981).
%C A075791 Use 4^2 rather than 2^4, etc.
%e A075791 1 = 3^2 - 2^3, 2 = 3^3 - 5^2, 3 = 2^2 - 1^2, 4 = 2^3 - 2^2, etc.
%K A075791 nonn
%O A075791 1,1
%A A075791 _Zak Seidov_, Oct 13 2002
%E A075791 More terms from _David Wasserman_, Jan 23 2005