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This is Numberphile. We mainly post videos about mathematics and just numbers in general.

Tetrahedral Numbers

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

Cones are MESSED UP

Cones are MESSED UP

Untouchable Numbers

Untouchable Numbers