Number of nX3 0..1 arrays with every element unequal to 0, 1, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

A316306

Number of nX3 0..1 arrays with every element unequal to 0, 1, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =7a(2) =10a(3) =21a(4) =44a(5) =83a(6) =168a(7) =365a(8) =766a(9) =1615a(10) =3490a(11) =7555a(12) =16450a(13) =36279a(14) =80602a(15) =180187a(16) =405906a(17) =920301a(18) =2097902a(19) =4807235a(20) =11066060a(21) =25572903a(22) =59300268a(23) =137919877a(24) =321585732a(25) =751461855a(26) =1759215072a(27) =4124852047a(28) =9684327044a(29) =22762103611

External references