What is the general term formula of sequence-4-1 25 8 11 14 17? Give it to me by 24:00 on March 7th,
an=3n-7
What is the general formula of 2,3,5,9,17?
a(n)=2^(n-1)+1
Write through formula 3,5,9,17,33
0,1,0,1.
Analysis: it is observed that the difference between the front and back terms is the power of 2
An = A(n-1) + 2^(n-1) (n>1,A1=3)
There is a sequence of 7, 12, 17, 22, 27 The number 101 is () what is the number n
You can see that every time you add 5, the nth one is to add 5 * n on the basis of 2. Do you think the first one is 2 plus a 5
101 is 507, the nth is 5N + 2