Arithmetic series

say ~(2, 4, 6, ... 100)
# 2 4 6 8 10 ... 100

- - - -

say ~(5, 10, 15 ... 100)
# 5 10 15 20 25 ... 100

- - - -

say ~(10, 9, 8 ... 0);
# 10 9 8 7 6 5 4 3 2 1 0