Number of permutations p of [n] such that (n-p(i)+i) mod n >= 5 for all i.
A189389
Number of permutations p of [n] such that (n-p(i)+i) mod n >= 5 for all i.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =2a(8) =49a(9) =484a(10) =6208a(11) =79118a(12) =1081313a(13) =15610304a(14) =238518181a(15) =3850864416a(16) =65598500129
External references
- oeis: A189389