It is known that the sum of the first n terms of the sequence {an} is Sn, and Sn = n-5an-85, n belongs to n *, it is proved that {an-1} is an equal ratio sequence

It is known that the sum of the first n terms of the sequence {an} is Sn, and Sn = n-5an-85, n belongs to n *, it is proved that {an-1} is an equal ratio sequence

As a (1) = 1-5a (1) - 85, and 6A (1) is the first-5a (1) - 85,6a (1) = 84, and a (1) = 14.a (n + 1) = s (n (n + 1) = s (n (n + 1) = s (n (n + 1) = s (n (n + 1) = s (n (1) (1) = 1-5a (1) - 85 (1) (1) = 1-5a (1) - 85,6a (1) - 85,6a (1) (6a (1) (6a (1) (6a (1) (1) (1) (6) (a (n + 1) (n + 1) = 14.a (n (n) (a (n + 1) (n + 1) (n + 1) (n + 1) - 6 [a (n (n + 1 (n + 1) - 1) - 6 [5 [5 (a (n (n (n (n (n) - 5 (n (n) - 1) - 1) - 6)]] [5 / 6) [a (5 / 6) [a (the (n (n) - 6) (the (a (n) - 1 = (- 15) (5 / 6) ^ (n-1), n = 1,2,... A (n) = 1-15 (5 / 6) ^ (n-1), n = 1,2