Half the number of n X 3 binary arrays with the number of 1-1 adjacencies equal to the number of 0-0 adjacencies.
A183249
Half the number of n X 3 binary arrays with the number of 1-1 adjacencies equal to the number of 0-0 adjacencies.
Terms
- a(0) =1a(1) =6a(2) =25a(3) =164a(4) =1092a(5) =7954a(6) =57519a(7) =429936a(8) =3205504a(9) =24288784a(10) =184062519a(11) =1407419548a(12) =10773952376a(13) =82925706270a(14) =639182387805
External references
- oeis: A183249