It is known that the sequence {an} satisfies a 1 = 7/6, and the point (2Sn+an, Sn+ 1) is on the image of F(x)= 1/2 x+ 1/3.

One: Find the general formula of sequence {an}

Two: if Cn=(an-2/3)n and Tn is the first n terms of Cn and n, find Tn(n is all below). As can be seen from the title,1/2x (2sn+an)+1/3 = sn+1sn+an/2 = sn+.