Hi, I started writing a new draft titled "Avoiding chazakah with the Prouhet-Thue-Morse sequence" and would love to get your feedback. I plan on publishing it on the 17th (sorry to be sending this out so late!). I would be especially interested in knowing about more good visuals (and "audibles"!) related to the Prouhet-Thue-Morse sequence. (I'm trying to get the publisher of Per Norgard's "Drumbook" to give me permission to use an excerpt from the accompanying CD, but I don't know if that will come through in time.) Suggestions for references, and comments of all kinds, are welcome. As usual, the piece is too long, so one useful form of feedback would be "The part about X isn't bad, but it's not as interesting as the other parts" (especially if many pre-readers single out the same X). And, more generally, I appreciate candid criticism from people who are sympathetic to my aims but think I've fallen short of them. My prose style is designed to make the material accessible, but my breeziness should not be interpreted as indicating indifference to scholarly correctness. Keep in mind that all math-fun feedback goes into one mail-feed, so I won't know whose feedback is whose unless you sign your comment. Also, all substantive suggestions that I use will be acknowledged (unless you specifically ask me not to do this). Please leave your feedback here: https://mathenchant.wordpress.com?p=1422&shareadraft=587802aa41b63 Title: Avoiding chazakah with the Prouhet-Thue-Morse sequence Beginning: The ingredients of today's midwinter mathematical stew will include beans, boats, never-ending chess games, a Dane named Per who's into aperiodic percussion, an ABBA that hails from Norway rather than Sweden, a song from Jewish summer camps, and a way to prove 0^2 + 3^2 + 5^2 + 6^2 = 1^2 + 2^2 + 4^2 + 7^2 using calculus instead of a calculator ... Read more: https://mathenchant.wordpress.com?p=1422&shareadraft= 587802aa41b63 Thanks, Jim Propp