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

A297885

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

Terms

    a(0) =8a(1) =29a(2) =26a(3) =36a(4) =84a(5) =134a(6) =223a(7) =396a(8) =638a(9) =1173a(10) =2157a(11) =3812a(12) =6922a(13) =12304a(14) =21936a(15) =40412a(16) =73746a(17) =133407a(18) =243158a(19) =440979a(20) =803278a(21) =1473594a(22) =2689801a(23) =4905976a(24) =8967627a(25) =16372815a(26) =29949905a(27) =54844798a(28) =100263893a(29) =183363553

External references