Number of permutations of an n-sequence discordant with three given permutations (see reference) in n-2 places.
A000388
Number of permutations of an n-sequence discordant with three given permutations (see reference) in n-2 places.
Terms
- a(0) =6a(1) =20a(2) =180a(3) =1106a(4) =9292a(5) =82980a(6) =831545a(7) =9139482a(8) =109595496a(9) =1423490744a(10) =19911182207a(11) =298408841160
External references
- oeis: A000388