The Troublemaker Number
Alex Bellos discusses how the Incans used knots in string (Quipu) to record numbers.Check out Brilliant (get 20% off their premium service): https://brillian...
Dr Harini Desiraju discusses Somos Sequences and a number which breaks a streak.
Harini is a postdoctoral fellow at The University of Sydney.
This video was recorded at MSRI. Like sequences - see these videos with Neil Sloane: http://bit.ly/Sloane_Numberphile

