Maximum number of inverses of an element in the full symmetric semigroup T_n.
A350646
Maximum number of inverses of an element in the full symmetric semigroup T_n.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =16a(5) =48a(6) =216a(7) =972a(8) =4374a(9) =24576a(10) =147456a(11) =884736a(12) =5625000a(13) =42187500a(14) =316406250a(15) =2373046875a(16) =19591041024a(17) =176319369216
External references
- oeis: A350646