The number of permutations w of [n] with no w(i)+1 == w(i+1) (mod n).
A167760
The number of permutations w of [n] with no w(i)+1 == w(i+1) (mod n).
Terms
- a(0) =1a(1) =0a(2) =0a(3) =3a(4) =4a(5) =40a(6) =216a(7) =1603a(8) =13000a(9) =118872a(10) =1202880a(11) =13361403a(12) =161638764a(13) =2115684272a(14) =29792671832a(15) =449145795915
External references
- oeis: A167760