Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,0,2,1 for x=0,1,2,3,4.
A197306
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,0,2,1 for x=0,1,2,3,4.
Terms
- a(0) =13a(1) =275a(2) =3750a(3) =85087a(4) =1711736a(5) =32070816a(6) =638181656a(7) =12585831905a(8) =246443960437
External references
- oeis: A197306