Number of (n+1)X(2+1) 0..2 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both.
A235217
Number of (n+1)X(2+1) 0..2 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both.
Terms
- a(0) =427a(1) =8029a(2) =145669a(3) =2667851a(4) =48751703a(5) =891368897a(6) =16295474229a(7) =297913907755
External references
- oeis: A235217