Half the number of n X 2 binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row.
A069440
Half the number of n X 2 binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row.
Terms
- a(0) =0a(1) =2a(2) =16a(3) =88a(4) =414a(5) =1810a(6) =7616a(7) =31376a(8) =127710a(9) =516170a(10) =2077552a(11) =8341288a(12) =33440190a(13) =133941922a(14) =536205056a(15) =2145876128a(16) =8586053694a(17) =34350369050a(18) =137416333936a(19) =549701205496
External references
- oeis: A069440