Alternate between sets and integers representing sets of integers via bits
int2set(n, index = 1, simplify = FALSE)set2int(x, index = 1)
For int2set a list of sets one for each integer
supplied, for set2int a vector of the same length as the number
of sets supplied.
integer respresenting a set
integer to start from
logical: return a single list if n has length 1?
list of sets
set2int: Convert sets to integers
Converts an integer into its binary representation and interprets this as a set of integers. Cannot handle sets with more than 31 elements.