Tetrahedral Numbers
Featuring James Grime.
Bug Byte puzzle from Jane Street at https://bit.ly/janestreet-bugbyte and programs at https://bit.ly/janestreet-programs (episode sponsor)
Dr James Grime discussing triangular numbers, cubes, pentagonal numbers, hexagonal numbers, tetrahedral numbers and Pollock's Conjecture.
James Grime: https://www.singingbanana.com
More James on Numberphile: http://bit.ly/grimevideos
Sixty Symbols physics videos: https://www.youtube.com/sixtysymbols
