Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 1,2 or 2,-2.
A264061
Number of (4+1)X(n+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) =1a(1) =45a(2) =2025a(3) =32400a(4) =518400a(5) =11151360a(6) =239878144a(7) =4614184960a(8) =88756326400
External references
- oeis: A264061