Number of length n arrays of permutations of 0..n-1 with each element moved by -n to n places and the total absolute value of displacements not greater than 2*(n-1).
A263898
Number of length n arrays of permutations of 0..n-1 with each element moved by -n to n places and the total absolute value of displacements not greater than 2*(n-1).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =20a(4) =76a(5) =300a(6) =1252a(7) =5324a(8) =23124a(9) =101548a(10) =450320a(11) =2010108a(12) =9022704a(13) =40674180a(14) =184026168a(15) =835121676a(16) =3799670208a(17) =17326530900a(18) =79163726536a(19) =362316871964
External references
- oeis: A263898