343867 and Tetrahedral Numbers - Numberphile
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343867 and Tetrahedral Numbers - Numberphile
https://www.youtube.com/watch?v=CK3_zarXkw0
Featuring James Grime. Bug Byte puzzle from Jane Street at https://bit.ly/janestreet-bugbyte and programs at https://bit.ly/janestreet-programs (episode spon...