Number of 4Xn 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302227
Number of 4Xn 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =34a(2) =194a(3) =934a(4) =6110a(5) =38736a(6) =251254a(7) =1610569a(8) =10296766a(9) =66243864a(10) =424625879a(11) =2726394062a(12) =17497812841a(13) =112298621494a(14) =720825717366
External references
- oeis: A302227