Number of nX6 0..1 arrays with every element unequal to 1, 2, 5 or 8 king-move adjacent elements, with upper left element zero.

A304300

Number of nX6 0..1 arrays with every element unequal to 1, 2, 5 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =5a(1) =5a(2) =14a(3) =30a(4) =88a(5) =237a(6) =685a(7) =1827a(8) =4974a(9) =14425a(10) =38170a(11) =106811a(12) =300976a(13) =812239a(14) =2276303a(15) =6323625a(16) =17330722a(17) =48327544a(18) =133708944a(19) =369121580a(20) =1025301855a(21) =2835969833a(22) =7848824689a(23) =21758969128a(24) =60215392883a(25) =166756048572a(26) =461937731257

External references