Number of nX4 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-2) or (-2,0) and new values introduced in order 0..2.

A275033

Number of nX4 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-2) or (-2,0) and new values introduced in order 0..2.

Terms

    a(0) =4a(1) =48a(2) =137a(3) =570a(4) =2334a(5) =9774a(6) =40572a(7) =169348a(8) =704704a(9) =2937764a(10) =12236817a(11) =50996499a(12) =212474695a(13) =885374358a(14) =3689111563a(15) =15371973010a(16) =64051973628a(17) =266893366673

External references