Number of distinct regular languages over 3-ary alphabet, whose minimum regular expression has reverse Polish length n.
A211943
Number of distinct regular languages over 3-ary alphabet, whose minimum regular expression has reverse Polish length n.
Terms
- a(0) =5a(1) =3a(2) =15a(3) =33a(4) =106a(5) =361a(6) =1012a(7) =3859a(8) =11655a(9) =43431
External references
- oeis: A211943