Number of (n+1)X(4+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 1,-2 or 2,-1.
A264124
Number of (n+1)X(4+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 1,-2 or 2,-1.
Terms
- a(0) =8a(1) =200a(2) =5733a(3) =108045a(4) =1995525a(5) =39592980a(6) =791859600a(7) =15730470000a(8) =311564912400
External references
- oeis: A264124