1/6 the number of (n+1) X 4 0..2 arrays with every 2 X 2 subblock containing all three values.
A183597
1/6 the number of (n+1) X 4 0..2 arrays with every 2 X 2 subblock containing all three values.
Terms
- a(0) =120a(1) =1479a(2) =17174a(3) =201770a(4) =2366412a(5) =27768032a(6) =325834456a(7) =3823553752a(8) =44868561272a(9) =526526214848
External references
- oeis: A183597