Triangle T(n,k) giving the number of permutations pi of {1,2,...,n} such that for all i, pi(i) is not in {i, i+1, ..., i+k-1} (mod n), with 0 <= k <= n - 1.
A321352
Triangle T(n,k) giving the number of permutations pi of {1,2,...,n} such that for all i, pi(i) is not in {i, i+1, ..., i+k-1} (mod n), with 0 <= k <= n - 1.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =6a(4) =2a(5) =1a(6) =24a(7) =9a(8) =2a(9) =1a(10) =120a(11) =44a(12) =13a(13) =2a(14) =1a(15) =720a(16) =265a(17) =80a(18) =20a(19) =2a(20) =1a(21) =5040a(22) =1854a(23) =579a(24) =144a(25) =31a(26) =2a(27) =1a(28) =40320a(29) =14833
External references
- oeis: A321352