Number of (n+1)X(4+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal.
A232511
Number of (n+1)X(4+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal.
Terms
- a(0) =54a(1) =326a(2) =2516a(3) =19138a(4) =145682a(5) =1110752a(6) =8470018a(7) =64594290a(8) =492627324a(9) =3757052022a(10) =28653492802a(11) =218528696816
External references
- oeis: A232511