Formal Definitions
Formally, Sylvester's sequence can be defined by the formula
The product of an empty set is 1, so s0 = 2.
Alternatively, one may define the sequence by the recurrence
- with s0 = 2.
It is straightforward to show by induction that this is equivalent to the other definition.
Read more about this topic: Sylvester's Sequence
Famous quotes containing the words formal and/or definitions:
“True variety is in that plenitude of real and unexpected elements, in the branch charged with blue flowers thrusting itself, against all expectations, from the springtime hedge which seems already too full, while the purely formal imitation of variety ... is but void and uniformity, that is, that which is most opposed to variety....”
—Marcel Proust (18711922)
“Lord Byron is an exceedingly interesting person, and as such is it not to be regretted that he is a slave to the vilest and most vulgar prejudices, and as mad as the winds?
There have been many definitions of beauty in art. What is it? Beauty is what the untrained eyes consider abominable.”
—Edmond De Goncourt (18221896)