Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,0,1 for x=0,1,2,3,4.
A197675
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,0,1 for x=0,1,2,3,4.
Terms
- a(0) =5a(1) =33a(2) =202a(3) =1111a(4) =5639a(5) =29190a(6) =153715a(7) =817865a(8) =4363976a(9) =23310791a(10) =124634939a(11) =666885018a(12) =3570183285a(13) =19119296745a(14) =102409115514a(15) =548602179057
External references
- oeis: A197675