Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

A305093

Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =2a(1) =10a(2) =17a(3) =20a(4) =37a(5) =142a(6) =295a(7) =459a(8) =1201a(9) =3140a(10) =5679a(11) =11961a(12) =30760a(13) =65672a(14) =131365a(15) =307549a(16) =703252a(17) =1466918a(18) =3214273a(19) =7362021a(20) =16026098a(21) =34540558a(22) =77372285a(23) =171866728a(24) =373246320a(25) =822381926a(26) =1829780399a(27) =4016363100a(28) =8804567379

External references