Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,0,1,0 for x=0,1,2,3,4.
A197745
Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,0,1,0 for x=0,1,2,3,4.
Terms
- a(0) =2a(1) =12a(2) =66a(3) =212a(4) =921a(5) =4086a(6) =17332a(7) =75122a(8) =326124a(9) =1408419a(10) =6097753a(11) =26404858a(12) =114255411a(13) =494519798a(14) =2140532037a(15) =9264510866a(16) =40098753497a(17) =173557720814a(18) =751196491106
External references
- oeis: A197745