Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and the total absolute value of displacements not greater than 2*(n-1).
A263903
Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 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) =5197a(8) =21735a(9) =91151a(10) =384641a(11) =1629124a(12) =6927800a(13) =29539650a(14) =126281489a(15) =540980783a(16) =2321907944a(17) =9982050981a(18) =42977082052a(19) =185279158666a(20) =799716576405
External references
- oeis: A263903