Bell or exponential numbers: number of ways to partition a set of n labeled elements.
A000110
Bell or exponential numbers: number of ways to partition a set of n labeled elements.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =52a(6) =203a(7) =877a(8) =4140a(9) =21147a(10) =115975a(11) =678570a(12) =4213597a(13) =27644437a(14) =190899322a(15) =1382958545a(16) =10480142147a(17) =82864869804a(18) =682076806159
External references
- oeis: A000110