Number of length n arrays of permutations of 0..n-1 with each element moved by -5 to 5 places and with no two consecutive decreases.

A263680

Number of length n arrays of permutations of 0..n-1 with each element moved by -5 to 5 places and with no two consecutive decreases.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =17a(4) =70a(5) =349a(6) =1658a(7) =7356a(8) =30374a(9) =121676a(10) =479589a(11) =1917853a(12) =7777174a(13) =31840851a(14) =130793340a(15) =537219555a(16) =2200344721a(17) =8992050521a(18) =36701192008a(19) =149773458903a(20) =611384304706

External references