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

A298549

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

Terms

    a(0) =1a(1) =7a(2) =4a(3) =14a(4) =16a(5) =51a(6) =104a(7) =262a(8) =689a(9) =1784a(10) =4767a(11) =12968a(12) =35155a(13) =96254a(14) =264440a(15) =726815a(16) =2002456a(17) =5521018a(18) =15227274a(19) =42020683a(20) =115979875a(21) =320151219a(22) =883859925a(23) =2440243349a(24) =6737508423a(25) =18602828041a(26) =51364692406a(27) =141825760260a(28) =391605586640

External references