Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

A305645

Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =5a(1) =21a(2) =31a(3) =137a(4) =574a(5) =2360a(6) =13498a(7) =83190a(8) =481377a(9) =2919477a(10) =18188505a(11) =111190231a(12) =681420231a(13) =4209030021a(14) =25916430566a(15) =159406198332a(16) =982241553059

External references