404 NOT SCALAR!! These scale pages are only functional for scales with a root tone -- how did you end up on this page? There must be a broken link in my site, or maybe you're just being clever and putting numbers in the URL. Either way, I suppose at this point you should know that any pitch class set with no root will have an even-numbered binary representation. And this site is only (currently) able to do some of these calculations on pitch class sets that have a root.