Yep, one stitch extra on the second front section. It's to match the 1x1 ribbing, I think. Craftster has a couple threads where this was explained, either in the Knitalong or Completed Objects forum. It's toward the last few pages of one or the other so you don't have to go through 100 of 'em to find it.
ETA: Okay, and then I found this post on the Knitalong forum -
"Divide the total CO# by 6 to get the number of stitches for each of the front and sleeve sections (for example, in the sample pattern, I CO 49, so each front and sleeve section would have 8 st). Multiply that number by 2 to get the number of st for the back section (I had 16). The back portion has an odd number of st so that the yos line up nicely with the ribbing. You may need to add or subtract one stitch to get the total to add up to the CO amount."
But I'm sure one of the posts said the extra stitch should be on the front...
<checks out craftster again...>
Ahhhh, here it is, in the Completed Projects forum:
"[quote from someone else]
`CO 72 stitches (hoping this turns out to be about a 4-6 size).
Why does the original pattern have an odd number of CO stitches?
Should I CO 73 instead and make the back section 25 stitches?
So my sections would be: 12, 12, 24, 12, 12
72 being the right number would depend on your gauge.'
Somewhere in all these pages (or the knit along pages) she explains that she used an odd number so the ribbing would match up with the raglan increases. (If you look at the picture you can see how nicely the knit stitch between the yarnover holes lines up with a knit stitch in the ribbed neck band - very clever of her.)
So you should cast on 73 and your sections should be:
12, 12, 24, 12, 13 (seems like the odd number would be in the back section but if you look at her example on the first page you'll see it is in the last section)."
That would work the same if you CO 76 sts; just add one more to each sleeve and front section, and 2 more to the back.