Number of (n+1)X(2+1) 0..4 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions but not both.
A234771
Number of (n+1)X(2+1) 0..4 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions but not both.
Terms
- a(0) =454a(1) =3980a(2) =28840a(3) =247394a(4) =1912554a(5) =16146124a(6) =127371542a(7) =1063565190a(8) =8483787204a(9) =70296753566a(10) =564722797390
External references
- oeis: A234771