Aflight of stairs gets wider as it descends. the top stair is 15 bricks across, the second stair is 17 bricks across, and the third stair is 19 bricks across. what is the total number of bricks used in all 16 stairs?

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?