Interlock bindoff (alternative to JSSBO). Bindoff That Stretches Out And Snaps Back In Place And Is Also Invisible(or close to it). This is one of my favorite bind offs, it doesn't leave a ruffled effect after being stretched .
The odd number might freak me out. Cast On an odd number of stitches. Row (wrong side) repeat * to * to end. Row (purl wise), repeat * to * to end. These 2 rows form the pattern.