Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

A316451

Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =2a(1) =10a(2) =23a(3) =48a(4) =229a(5) =850a(6) =3223a(7) =10880a(8) =45692a(9) =175031a(10) =633752a(11) =2571686a(12) =9904681a(13) =37484676a(14) =148315504a(15) =573843418a(16) =2209226947a(17) =8646079404a(18) =33532139222a(19) =129892215361a(20) =506136051248

External references