Number of classes of endofunctions of [n] under reversal and complement to n+1.
A275550
Number of classes of endofunctions of [n] under reversal and complement to n+1.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =10a(4) =72a(5) =819a(6) =11772a(7) =206572a(8) =4196352a(9) =96871525a(10) =2500050000a(11) =71328400806
External references
- oeis: A275550