Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having index change (+-,+-) 0,2 1,1 or 1,0.
A263974
Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having index change (+-,+-) 0,2 1,1 or 1,0.
Terms
- a(0) =0a(1) =72a(2) =1817a(3) =10720a(4) =89472a(5) =1791696a(6) =27783305a(7) =317382472a(8) =3783068416a(9) =51756812704a(10) =698792225489
External references
- oeis: A263974