Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4 or 8 king-move adjacent elements, with upper left element zero.

A305248

Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =5a(1) =17a(2) =17a(3) =42a(4) =79a(5) =163a(6) =356a(7) =794a(8) =1699a(9) =3824a(10) =8679a(11) =19781a(12) =44895a(13) =103263a(14) =237666a(15) =548058a(16) =1264630a(17) =2928625a(18) =6784853a(19) =15731354a(20) =36493477a(21) =84743671a(22) =196829622a(23) =457317706a(24) =1062817463a(25) =2470772382a(26) =5744515982a(27) =13357785806a(28) =31064375867

External references