Number of permutations of length 2n+1 which are invariant under the reverse-complement map and have no decreasing subsequences of length 5.
A145845
Number of permutations of length 2n+1 which are invariant under the reverse-complement map and have no decreasing subsequences of length 5.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =34a(4) =208a(5) =1504a(6) =12283a(7) =109778a(8) =1050820a(9) =10614856a(10) =111978128a(11) =1224261856a(12) =13792583296a(13) =159411938560
External references
- oeis: A145845