Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,0,2,1 for x=0,1,2,3,4.
A196970
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,0,2,1 for x=0,1,2,3,4.
Terms
- a(0) =3a(1) =23a(2) =104a(3) =815a(4) =3675a(5) =20500a(6) =115563a(7) =638791a(8) =3550336a(9) =19599537a(10) =108573593a(11) =601527392a(12) =3331391577a(13) =18450904073a(14) =102183492764a(15) =565933465777
External references
- oeis: A196970