Number of nX2 arrays containing 2 copies of 0..n-1 with no element plus any vertical neighbor equal to n-1.
A265860
Number of nX2 arrays containing 2 copies of 0..n-1 with no element plus any vertical neighbor equal to n-1.
Terms
- a(0) =1a(1) =2a(2) =22a(3) =384a(4) =19080a(5) =1019328a(6) =106546608a(7) =11075595648
External references
- oeis: A265860