Ah, damn, I thought it might when I sent it.
Unprotect the sheet (in the review ribbon along the top, just click on the padlock on the page).
Then go on Insert > Name > Define:
In the top text box type "Bits"
and in the bottom text box copy and paste:
"=2^(16-ROW(INDIRECT("1:16")))"
(Don't type or copy the surrounding " s)
Sorry, I didn't know if the definitions would carry over when sent. Hope that makes sense.