Number of nX2 arrays containing 2 copies of 0..n-1 with no element plus any horizontal neighbor equal to n-1.
A265879
Number of nX2 arrays containing 2 copies of 0..n-1 with no element plus any horizontal neighbor equal to n-1.
Terms
- a(0) =0a(1) =2a(2) =24a(3) =792a(4) =39360a(5) =2396880a(6) =241012800a(7) =27159592320
External references
- oeis: A265879