Number of nX4 0..1 arrays with every element equal to 1, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

A298830

Number of nX4 0..1 arrays with every element equal to 1, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =16a(2) =6a(3) =68a(4) =141a(5) =489a(6) =2774a(7) =9849a(8) =39101a(9) =183074a(10) =768268a(11) =3094425a(12) =13600466a(13) =58825790a(14) =243388690a(15) =1044751712a(16) =4510287691a(17) =18993143352a(18) =80911731590a(19) =347373816744

External references