Number of (n+1) X (2+1) arrays of permutations of 0..n*3+2 with each element having index change (+-,+-) 0,0 1,1 or 1,2.
A263960
Number of (n+1) X (2+1) arrays of permutations of 0..n*3+2 with each element having index change (+-,+-) 0,0 1,1 or 1,2.
Terms
- a(0) =20a(1) =141a(2) =1685a(3) =16856a(4) =183229a(5) =1926873a(6) =20563180a(7) =218090365a(8) =2319277277a(9) =24635857104a(10) =261817809677
External references
- oeis: A263960