decode mathematical equation

we have a set A i.e A=2x -1 The value of x lies between 57,885,000 ≤ X ≤ 999,999,999 And we have another set B i.e. B= 4m2+4m(n+1)+n2 m,n belongs to natural no. 4m2+4m(n+1)+n2 ≤ 2999,999,999 Now we have to find another set C i.e. C = A - B Hypothetical eg. IF A = 2,3,4,5 & B = 4,5,6 Then C come out be = 2,3 Set C excludes all those values which are common in A and B