How would you call this sequence of numbers?

...7, 5, 3, 1


Consecutive odd numbers going down? Decreasing?


What about this: 1, 3, 5, 7...How would you call this sequence of numbers?
That's a good description:





Consecutive odd integers in decreasing order for the first one.


Consecutive even integers in increasing order for the second one.How would you call this sequence of numbers?
n - 2.





and





n + 2.