Question 1080200
(2n-a)^2 is the general formula,
Where "n" is the term and "a" 1st term,
check:
2*1-1=1Square=1
2*2-1=3 " " "   =9
2*3-1=5 " " "=25
2*4-1=7 " " "=49
Thus,1,9,25,49.