A short note on the math of "The 12 Days of Christmas" is here: https://davidmeyer.github.io/qc/12_days_of_christmas.pdf. The LaTeX source is here: https://www.overleaf.com/read/ssswxrxftqvn (perhaps interesting because I had to write the Pascal's triangle with numerical values in LuaLaTeX because writing it in TikZ blows up when the number of rows in the triangle is greater than 7; see https://www.overleaf.com/read/tgkjgjnjhfjm). As always, questions/comments/corrections/* greatly appreciated.
Merry (almost) Christmas everyone!
References
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[1] "Cumulative song", https://en.wikipedia.org/w/index.php?title=Cumulative_song
[2] "Christmastime is Christmas Math Time!", https://davidmeyer.github.io/qc/christmastime_is_christmas_math_time.pdf
#12daysofchristmas #christmastimeischristmasmathtime #triangularnumbers #tetrahedralnumbers #mathematics #merrychristmas
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