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,-2.
A264056
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,-2.
Terms
- a(0) =8a(1) =216a(2) =2592a(3) =32400a(4) =450000a(5) =5760000a(6) =74880000a(7) =988650000a(8) =12899250000a(9) =168682500000
External references
- oeis: A264056