Initializing a 3D array

You can go a level further down and add a third layer of arrays. The rules don’t change:

my_array = [
  [

[1, 1, 2, 3, 5, 8, 13], [1, 4, 9, 16, 25, 36, 49, 64, 81], [2, 3, 5, 7, 11, 13, 17]

],
  [

[‘a’, ‘b’, ‘c’, ‘d’, ‘e’], [‘z’, ‘y’, ‘x’, ‘w’, ‘v’]

],
  [
    []
  ]
]