%N Integers originally used as card values in Planning Poker.
%C "infinity" was also included. Planning Poker is an estimation technique used in the "agile scrum" software development methodology. Original deck used these values; subsequent commercial decks often use different values.
%H James W. Grenning, <a href="http://renaissancesoftware.net/files/articles/PlanningPoker-v1.1.pdf"> Planning Poker, or, How to avoid analysis paralysis while release planning</a> , April 2002.
%Y Cf. A193616.
%A _Marc LeBrun_, Jul 31 2011