a(n) is the number of permutations on [n] with no strong fixed points but contains at least one small descent.
A346198
a(n) is the number of permutations on [n] with no strong fixed points but contains at least one small descent.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =8a(4) =43a(5) =283a(6) =2126a(7) =17947a(8) =168461a(9) =1741824a(10) =19684171a(11) =241506539a(12) =3198239994a(13) =45482655683a(14) =691471698917
External references
- oeis: A346198