Can I select alternate frames of an image sequence?

Is there a wildcard or sorting function in the file window that would allow me to sort images into an alternating sequence, so I can import them as a VSE strip or Compositor Image Seq?

Alternately does anyone know how I could do that in Windows, that is segregate all the odd and even frames into other folders? So I could load the new HDR images from Magic Lantern (after transcoding them into a frame sequence that is.)