1/128 the number of (n+2) X 3 binary arrays with no 3 X 3 subblock trace equal to any horizontal or vertical neighbor 3 X 3 subblock trace.
A185858
1/128 the number of (n+2) X 3 binary arrays with no 3 X 3 subblock trace equal to any horizontal or vertical neighbor 3 X 3 subblock trace.
Terms
- a(0) =4a(1) =22a(2) =124a(3) =694a(4) =3892a(5) =21814a(6) =122284a(7) =685462a(8) =3842404a(9) =21538774a(10) =120736732a(11) =676795894a(12) =3793814164a(13) =21266419702a(14) =119210006284a(15) =668237802454
External references
- oeis: A185858