Number of nX3 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1.
A203537
Number of nX3 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1.
Terms
- a(0) =0a(1) =4a(2) =72a(3) =144a(4) =1840a(5) =10404a(6) =69920a(7) =490000a(8) =3317120a(9) =22524516a(10) =153723240a(11) =1044840976a(12) =7112904336a(13) =48420242116a(14) =329561076960
External references
- oeis: A203537