Number of nX4 0..1 arrays with every element equal to 2 or 3 king-move adjacent elements, with upper left element zero.

A297810

Number of nX4 0..1 arrays with every element equal to 2 or 3 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =8a(4) =13a(5) =27a(6) =41a(7) =100a(8) =208a(9) =450a(10) =898a(11) =1871a(12) =3889a(13) =8201a(14) =17095a(15) =35607a(16) =74032a(17) =154537a(18) =322580a(19) =673283a(20) =1403752a(21) =2927384a(22) =6106043a(23) =12739513a(24) =26576048a(25) =55436430a(26) =115633960a(27) =241213607a(28) =503185198a(29) =1049671378

External references