Number of involutions (plus identity) in the n-fold iterated wreath product of C_2.
A332757
Number of involutions (plus identity) in the n-fold iterated wreath product of C_2.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =44a(4) =2064a(5) =4292864
External references
- oeis: A332757