Number of classes created in S_n by the {132, 231}{213, 312}-equivalence.
A222319
Number of classes created in S_n by the {132, 231}{213, 312}-equivalence.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =10a(4) =26a(5) =76a(6) =234a(7) =782a(8) =2804a(9) =10972a(10) =47246a(11) =224648
External references
- oeis: A222319