Number of classes of endofunctions of [n] under reversal.
A275549
Number of classes of endofunctions of [n] under reversal.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =18a(4) =136a(5) =1625a(6) =23436a(7) =412972a(8) =8390656a(9) =193739769a(10) =5000050000a(11) =142656721086
External references
- oeis: A275549