Number of n X 2 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.
A209094
Number of n X 2 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.
Terms
- a(0) =2a(1) =11a(2) =82a(3) =612a(4) =4568a(5) =34096a(6) =254496a(7) =1899584a(8) =14178688a(9) =105831168a(10) =789934592a(11) =5896152064a(12) =44009478144a(13) =328491216896
External references
- oeis: A209094