BELL NUMBERS

The Bell numbers (1, 1, 2, 5, 15, 52, 203, 877, 4140, 21147, 115975, 678570, 4213597, ...) describe the number of ways a set with n elements can be partitioned into disjoint, non-empty subsets.

The number sequences have been named as such in honor of Eric Temple Bell, a mathematician and writer who published his fiction work as John Taine.

The following plates have been created from the {1, 2, 3, 4}, 15 partitions - as explained further by mathematician Robert Dickau