Number of ordered pairs (a,g) with a in IS_n the symmetric inverse semigroup on [n] and g in symmetric group on [n] such that ag=ga.
A350225
Number of ordered pairs (a,g) with a in IS_n the symmetric inverse semigroup on [n] and g in symmetric group on [n] such that ag=ga.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =60a(4) =480a(5) =4320a(6) =46800a(7) =554400a(8) =7459200a(9) =108864000a(10) =1745452800a(11) =30017433600a(12) =558036864000
External references
- oeis: A350225