Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,1,1,0 for x=0,1,2,3,4.
A197500
Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,1,1,0 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =19a(2) =162a(3) =967a(4) =7845a(5) =58434a(6) =462825a(7) =3560859a(8) =27478512a(9) =213540131a(10) =1655543599a(11) =12828732416a(12) =99455874997a(13) =771029045491
External references
- oeis: A197500