| Bell {multicool} | R Documentation |
This function computes the Bell numbers, which is the summ of Stirling numbers of the second kind, S(n, k), over k, i.e.
B_n = ∑_{k=1}^{n}S(n, k),n ≥ 1
Bell(n) B(n)
n |
A vector of one or more non-zero positive integers |
An vector of Bell numbers
James Curran
http://en.wikipedia.org/wiki/Stirling_numbers_of_the_second_kind#Recurrence_relation
Stirling2
## returns B(6) Bell(6) ## returns B(1), B(2), ..., B(6) B(1:6)