Number of nX3 0..1 arrays with every element unequal to 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

A304060

Number of nX3 0..1 arrays with every element unequal to 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =5a(2) =14a(3) =69a(4) =376a(5) =1891a(6) =9889a(7) =51283a(8) =265582a(9) =1378735a(10) =7148318a(11) =37076755a(12) =192302847a(13) =997352273a(14) =5172817910a(15) =26828692621a(16) =139146758064a(17) =721683805709

External references