Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

A304930

Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =21a(1) =237a(2) =186a(3) =842a(4) =2265a(5) =6426a(6) =15993a(7) =42032a(8) =107527a(9) =294610a(10) =802939a(11) =2150494a(12) =5755142a(13) =15441423a(14) =41220407a(15) =110573603a(16) =297147846a(17) =796997468a(18) =2138394333a(19) =5740020020a(20) =15394935940a(21) =41303582771a(22) =110856414628a(23) =297465011704

External references