Frank Numbers − the motivation
On occasion of the sixtiest birthday of a friend I created this card with no thoughts in my mind, I just wanted to make a happy card. At night in my bed I realised myself it being special to be able to divide the number of 60 by an successive series from 1 till 6.
I wondered wouldn't there be more of these numbers?
It started an addicted search based on these two notions: Start-series Factors and Frank Numbers.
Click here to learn more about the Frank Number theory.
Frank van de Loo