Number of rational series having complexity n over the finite field F_2 in two non-commuting variables.
A137342
Number of rational series having complexity n over the finite field F_2 in two non-commuting variables.
Terms
- a(0) =1a(1) =4a(2) =240a(3) =52032a(4) =37961472a(5) =95557604352
External references
- oeis: A137342