In an Arithmetic Sequence the difference between one term and the next is a constant. T n a n 1d 4 n 14 4 4n4 4n T n a n 1 d 4 n 1 4 4 4 n 4 4 n. D 4 d 4 This is the formula of an arithmetic sequence.
T n 7 n 5 T 1 7 1 5 2 T 2 7 2 5 9 T 3 7 3 5 16.
Is an arithmetic progression with a common difference of 2. D Common difference. S n Sum of n terms. The main purpose of this calculator is to find expression for the n th term of a given sequence.