Number of n X 3 0..2 arrays with no element equal to any value at offset (0,-2) (-1,-2) or (-2,-1) and new values introduced in order 0..2.

A275085

Number of n X 3 0..2 arrays with no element equal to any value at offset (0,-2) (-1,-2) or (-2,-1) and new values introduced in order 0..2.

Terms

    a(0) =3a(1) =36a(2) =192a(3) =1024a(4) =5440a(5) =29120a(6) =155904a(7) =834176a(8) =4463424a(9) =23883904a(10) =127801600a(11) =683853952a(12) =3659249536a(13) =19580378368a(14) =104773120768a(15) =560632993280

External references