Number of 2n X 2 0..3 arrays with values 0..3 introduced in row major order and each element equal to an even number of horizontal and vertical neighbors.
A198482
Number of 2n X 2 0..3 arrays with values 0..3 introduced in row major order and each element equal to an even number of horizontal and vertical neighbors.
Terms
- a(0) =5a(1) =193a(2) =10072a(3) =528283a(4) =27711478a(5) =1453628917a(6) =76251331828
External references
- oeis: A198482