I made up the pattern (and didn't write it down, unfortunately), and used the exact same pattern for my own olive green infinity scarf last year. I just love mine. A lot. Partly because it's olive, and partly because that yarn is so soft (which I can no longer buy locally, thanks to Zellers shutting down and disappearing).
Note: it looks like there's a big bulge in the scarf on one edge. There isn't. I was just arranging it quickly so that I could get all 7 of today's posts done in a short amount of time.