Number of n X 3 0..2 arrays with every 1 immediately preceded by 0 to the left or above, and every 2 immediately preceded by both a 1 and a 0.
A203366
Number of n X 3 0..2 arrays with every 1 immediately preceded by 0 to the left or above, and every 2 immediately preceded by both a 1 and a 0.
Terms
- a(0) =3a(1) =30a(2) =206a(3) =1570a(4) =11541a(5) =85932a(6) =636912a(7) =4728287a(8) =35081894a(9) =260344178a(10) =1931891935a(11) =14336007171a(12) =106382441959a(13) =789428803920
External references
- oeis: A203366