Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

A300262

Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =4a(1) =26a(2) =95a(3) =375a(4) =1526a(5) =6198a(6) =25034a(7) =101312a(8) =410252a(9) =1660983a(10) =6724306a(11) =27224178a(12) =110221701a(13) =446249130a(14) =1806706543a(15) =7314734637a(16) =29614856373a(17) =119900405862a(18) =485435683612

External references