Number of fixed-point free involutions in the n-fold iterated wreath product of C_2.
A332758
Number of fixed-point free involutions in the n-fold iterated wreath product of C_2.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =17a(4) =417a(5) =206657a(6) =44854599297
External references
- oeis: A332758