Stones on an Infinite Chessboard

Another curious puzzle and number sequence from Neil Sloane.

More of our videos with Neil: http://bit.ly/Sloane_Numberphile

Neil Sloane is founder of the On-Line Encyclopedia of Integer Sequences: https://oeis.org

More of our videos with Neil Sloane: http://bit.ly/Sloane_Numberphile

Pebbling a chessboard with Zvezda Stankova: https://youtu.be/lFQGSGsXbXE