QUE SIGNIFIE?

Euler commented "Mathematicians have tried in piètre to this day to discover some order in the sequence of Avantage numbers, and we have reason to believe that it is a mystery into which the mind will never penetrate" (Havil 2003, p. 163). In a 1975 lecture, D. Zagier commented "There are two facts about the allocation of Gratification numbers o