Number of 2n X 4 0..2 arrays with values 0..2 introduced in row major order and each element equal to an even number of horizontal and vertical neighbors.
A198639
Number of 2n X 4 0..2 arrays with values 0..2 introduced in row major order and each element equal to an even number of horizontal and vertical neighbors.
Terms
- a(0) =36a(1) =2436a(2) =162776a(3) =10937316a(4) =734979136a(5) =49393306556
External references
- oeis: A198639