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.
A264019
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) =34a(2) =1156a(3) =20570a(4) =366025a(5) =7320500a(6) =146410000a(7) =2898918000a(8) =57398576400
External references
- oeis: A264019